The truth is that there isn't any consumer-grade telecoms/ISP provider that doesn't have awful support. You need to go enterprise-grade for any kind of competent support, but the prices will follow as well. Only exception to this would be A&A when it comes to DSL, which offers great & competent service at somewhat affordable prices: https://www.aa.net.uk
Your best course of action is to never sign up to a contract (use the 30-day rolling plans) and be ready to switch at the slightest issue. For home/fixed-line, consider having 2 providers for redundancy so you don't lose connectivity while switching.
I've been a happy customer of A&A for 18 years now - you do pay a little more, but well worth it for the unfiltered service and excellent tech support on the very rare occasion I've had a problem.
No, that is not true. Like the other commenter here, I used Hyperoptic at my previous flat and they were brilliant. If they had coverage at my new place I'd sign up again in an instant
Your best course of action is to never sign up to a contract (use the 30-day rolling plans) and be ready to switch at the slightest issue. For home/fixed-line, consider having 2 providers for redundancy so you don't lose connectivity while switching.