I have the same experience as you do, but there’s a reason that the big ISPs continue to be big: The majority of customers seems to prioritize a lower price than a better level of support.

(Also, I’m not just talking about ISPs. I meant customer support in general and how the view has changed from “keeping a customer is much cheaper than gaining one” to “cattle, cattle, castle. If we lose one, there’s hundreds to gain”.)