I've had enough of them

I've had enough they cut me off for me to pjone them to tell me that I haven't been paying eft for 10 months owing 6k to be paid up to switch back on although a guy came to my house I filled in paperwork for debit order and also filled in my details on paper which was pretty legible for who ever filled it in digitally to mess it up completely. Been sitting over a week now back and fourth got asked to speak to a manager the manager calls me late at night to tell me that she's unimpressed that I had the audacity to request to speak to a manager, then told me the billing supervisor would call me to assist with a payment plan so I can be reconnected this is day 3 of waiting for them to call and 2 emails sent. Don't even get me started on the way they installed my fibre above ground and how I waited months for them to bring me a router. The customer service of these guys is just as appalling as their service I have had enough now of the wait game how am I expected to pay of I'm still waiting for a solution.