Bad customer service and extremely dodge mis-selling techniques used mid-contract with offers of "free upgrades" which are not free and extend your contract. 8 separate communications (1 a doorstep visit) about taking up free upgrade but there is no free FTTC to FTTP upgrade on the phone number they say to call. Phone and webchat is useless - they will only tell you to restart your router if you have issues. Customer services forum is better for support but takes days/weeks to resolve service issues and has software problems of its own. Routers have had known issues for a long time but fixes are not forthcoming - normal people with no technical expertise will not be able to navigate these things. Bad ISP for the vulnerable, sick or busy. I have reported to ICO and OfCOM