Bad service and ********** terms & conditions

When we changed over the account holder they advised me that it could no longer be an eft payment and it now needs to be a debit order. So I agreed. The previous account holder paid R549 per a month. When I took over the account it went up to R649 and customer services could not explain the reason. As time went by I decided to cancel. The deal is on MONTH to MONTH, now fibrestream tells me I need to pay a sum which is calculated till end of term. How does a month to month deal have an end of term payment for cancelation. Furthermore the plan is pay and use. The company is refusing for me to just cancel. Worst service I have ever got and I would never recommend anyone