Seriously, who wants to chat with a service whose latency is about 19 to 31 minutes?
First user experience during the hockey stick phase being 'poor' is to be expected for anything with this degree of growth. Try scaling anything through three orders of magnitude in 24 hours and you'll get why.
The amazing thing to me is that your order got delivered at all.
But they were. Because they were using an invite-only signup to limit the amount of new users they can take in, they could make a reasonable assumption about how busy they could get at rush times.
Besides, the people on the other side aren't robots - at the very least they could've apologised for the late replies and explained about how busy they were. Because they're humans - or so the website claims - and that means they should show a bit of humanity and empathy and whatnot.
TBF I don't really think they hire actual humans, that just doesn't scale. Especially if 90% of their users just want to order food - reasonably predictable input, that.
The bigger problem is that their service is just a simple middle man. They don't provide delivery services, they just choose which service to use. For the examples they gave (food delivery, grocery delivery, airline tickets), it's never going to be worth it to me to have them charge me an extra 25% to pick between the three services that will do that for me (Postmates, Instacart/Postmates, Hipmunk). What's more, SMS makes it more difficult to order. Postmates' interface is much better than trying to text an order in.
It's not that this is just an MVP. It's that this service really only takes away the decision of which other middle man to choose, and there's just not enough value there.
"Wow, everyone! This is truly amazing. We released Magic under 48 hours ago as an experiment and a side project, and now the traffic and requests are streaming in faster than we can handle."