I have had dedicated servers with OVH for many years, the support has always been for want of a better word "non existent" but that was accepted at these cheap as chips prices and I wasn't using them in a professional production capacity. But after many years and after the fiasco where they stopped selling servers for about 6 months to get themselves back on track and the constant changing of terms and conditions and multiple control panels to manage services and just the disorganisation of it all, I gave up and cancelled everything.
After a few years away I went back to test the VPS servers this year, and after constant disconnections and freezes I gave up with them after a month of use.
If you just want a cheap dedicated server in a non production professional capacity, I would certainly use them as the price is just hard to resist, but for anything in a production/professional capacity I would look elsewhere even if it cost five times as much, one thing I did learn is you really do get what you pay for in the hosting world and good support really is essential. Luckily there is a data center explosion in my town at the moment! (not literately)