Going no where

I have dstv in my home and in my business. I tried to cancel business before lockdown by following the steps that I was asked to by dstv business, but they continued to debit the account during lockdown. I contacted them again, but they persisted in their ways. For my home they keep over charging me. After hours of calls and getting no where I went into the local agent. They told me it was sorted out and that I would be credited. My next bill was to be R1200 but instead now jumped to R4600. They do not know there heads from their tales. Because of the constant errors and lack of dealing with issues, it leaves me no option but to part company with both divisions. This has been going on for months and months.