DSTV keeps taken money even after Cancellation

On behalf of my parents! They cancelled DSTV in August last year! Still, money was debited from their account to the tune of R1600 all told. They have followed the right channels and sent documents, bank statements, id etc, numerous times. Today is the 17Jan24, no monies have been paid to them. So this means my folks have to make yet another call to Multichoice to follow up and this also costs money! Poor Show DSTV! Pay them their R1600 with interest please!!!!