I've used phone support and according to my experience, their phone support is as poor as the regular one.
Hm, then maybe it was just a coincidence, or it depends on language (I used the support in German).
Tbh, I don’t expect support from them anyway – their dedicated systems are so cheap, for the cost of hosters which provide support I can rent a handful of systems at OVH and have the same reliability (and higher peak performance).
I’ve only ever used their phone support, so I can’t say anything about their online support, though.