Worst service

I have been going up and down with rain. I am owing them R303. 50 which I have arranged with them to debit it on the 1st July 2022, but they kept debiting my account on a daily basis causing me unnecessary bank charges, this made me then decide to cancel the contract with them this month end and also network is bad. Arrangement and cancelation was confirmed by them but now they have disconnected my internet which I had paid in full for this month. I would like to know what will happen to the remaining balance, are they going to prorata it to my outstanding balance, or what. What