Telkom robbing customers

I have a big problem with telkom I changed my contract from post-paid to prepaid mid February but I'm still being charged over a thousand brands every month for a that I was supposed to pay R899 each month.

During March month I suspended at work without pay so I payed telkom from my other account for end of March and now came month of April telkom decided not to debit my account (sighs). Now end of may month telkom debited an amount of R2288,94 which I presume is for the April and may month but the sickening part is that my account is suspended and I cannot get hold of anyone at their call center since Sunday 07-06-2020 up to date 10-06-2020 if telkom has had enough of my money they must just cancel my contract.