Absolute useless bunch of *******!

I am utterly disgusted in the lack of competency at Super Sonic! I cancelled my fibre line begining of April and changed over to an LTE line. I gave my months notice, paid for the new LTE router to be delivered. I had to fight for weeks to have the router delivered because they said they were waiting payment, after I had emailed them proof of payment 4 times. Finally the router arrived 1 month later. I have been on the phone countless times with them to confirm that the fibre line is cancelled and that my account would no longer be debited the fibre line amount and rather the LTE line amount. I even have a cancellation confirmation email from them and 2 months on They are still debiting my account for both lines. I have had to go into the bank twice to return the debit order at my expense. I have called over and over again to have someone in accounts call me back and sort this nonsense out but you can never speak to anyone in that department. I'm still waiting for that phone call four weeks later. When you call it is always escalated but no one in the accounts department ever calls back. I am paying for a line that was cancelled nearly 3 months ago. When speaking to the people in technical they confirm that on the system the fibre line is cancelled so why the hell am I still paying and why is it so difficult for Super sonic to just do the job properly. This is just an on going battle and no one seems to care. This is now the 3rd Hello Peter review we have had to post and still the issue is unsolved.