A customer that is fed-up with the Vox Services

My account has been wrongfully cancelled by Vox in February after I have made payment on the 27 February for March including the outstanding balance and this payment was made before due date (01 March 2022) specified on statement received on the 23 February 2022 from them. There were cost incurred to Vox due to them having to rectify the situation that they have caused. They have reconnected my services after seeing that I did make payment, but stated that I have to pay the amount incurred by Vox with no justification as to why I was liable for the payment. I have been sending constant emails regarding these allegations requesting feedback as to why I should pay if I have not caused the problem. These emails sent have not been attended to or responded to for quite some time and I have made multiple phone calls to speak to the person dealing with my account with no avail and do not even get a call back in the event they are busy at that time. I then continued to pay in march for services in April and May even though I have gone probably 2 weeks with no internet in March because of their delay in rectifying and retracting the cancellation. I also had to go without internet for about a week in May because they suspended my account for no apparent reason and after I called them and expressed my frustration especially after prior paying for the month of May which is when they reconnected my connection again. I have now received a final demand indicating that if I do no pay the amount incurred by Vox due to the cancellation they have made and supposedly retracted, they will terminate my services with no justification at all.