OTOH, if you wandered out to Shawinigan or Trois-Rivières, or even just Laval/Anjou you'd find a lot more uni-lingual Quebecois speakers, who would be positively delighted to hear your(/my) mangled grammar and grotesque pronunciations.
No, just no, they aren't and I can speak both.
I don't know if you are a native speaker, but It's tiring to have your own language (or 'dialect') explained to you.
For what it's worth, France has dozens of regional dialects as well.
A funny anecdote was when I was working with a guy name Jean-Nicolas and all the Québécois people called him Jean-Nic. That was very funny to the French guys hehe
Obviously they're not different languages - I was a bit exaggeratory in that regard. And I do understand both, in as much as I understand either. French is my third or fourth most proficient language after English, Spanish and maybe German, but I never get to use it (or German for that matter).
The two are however different enough in some pronunciation and idioms that we ultimately had to do a second localization to support both. And the differences reported to us ran the spectrum from simple things, such as how to correctly pronounce the (cardinal) number 1 (a cleaner "un" compared to what sounds to my ear like "arn"), to the longer phrases one might expect to hear in a voicemail prompt. Ultimately our translation department got things ironed out, but it was a (somewhat amusing/bemusing) learning experience for us.
I have another response in this thread about the origins of the Parisian accent (because it really is a new invention) compared to the Québec accent.
Also in Martinique, they speak with a less sing-songy accent than they do on the mainland.
I personally enjoy all the variations of my language, and especially appreciate the language that is 'of the people'.
If people made fun of OP's accent then they were dicks and I don't think the majority of people would do that. We do however switch to English quickly when we determine the other person is anglophone just because most people in Montreal are bilingual and hey, let's make it easier for everyone. If the other person asks me to continue in French, I'll gladly do so.
There were two accents in common use in 18th century France: the 'bel usage' and the 'grand usage'.
The short explanation is that after the French revolution, Parisians adopted the 'grand usage'—a pronunciation which till then had been reserved for public speeches and church sermons—for everyday speech.
The 'bel usage' was the usual French 'code' reserved for every day use. It more closely resembles the French spoken in Quebec.
But the 'bel usage' wasn't just a plebeian accent for the unwashed masses, the King's court spoke in 'bel usage'.
But after the revolution, people wanted to change things up: hence the new pencil head pronunciation they use there, which everyone says is the 'correct' one. lol
In Québec, we retained the original 'bel usage' and never adopted the new accent from Paris. We are the keepers of the proper pronunciation of French, unless you want to give a sermon or make a political speech that is...
I don't see a problem with either accent, as long as you enunciate, you will be understood across the entire Francophonie. (Well to be honest, I do prefer my 'accent' from Québec, because I don't have to lug around a dictionary to make sure I pronounce very si-ng-le sy-la-ble cleanly and correctly.)
Source: http://legoutdufrancais.org/dou-vient-laccent-des-quebecois-...
One summer between junior and senior years, I took a road trip to Montreal and tried out my French. I was thoroughly embarrassed and lived the OPs nightmare. The residents I spoke with seemed actively offended by my French and would smile condescendingly and speak to me in English.
During senior year, I was able to spend a week in France. It was a totally different experience. I spoke nothing but French for the week and was able to feed and otherwise care for myself. The locals seemed to genuinely appreciate my efforts to speak the language. The capstone was later in the week when a 2am knock on my door woke me up. A younger member of our group was having serious homesickness and wanted to call home, but couldn't figure out how to make the call. I went to the lobby with her to ask the desk clerk how to make the call. I ended up having a great conversation with the desk clerk who was only a few years older than me and was in Paris for university. We chatted for about 30 minutes about life, things we liked, cool things to see in Paris, etc. It was awesome!
For OP, give it a shot. The only way to get better is to do it!