Harassment by telkom debtor collectors

I have been a business customer if telkom for 22 years . My bills were always paid on time . In 2020 die to mall renovations , I closed my business , gave telkom the notice they required in writing to terminate both my lines . Their inefficient staff did not process my cancellation, they continued billing me . After two months of constant calls and emails , it was finally cancelled. It is almost a year and half later and telkom is still getting debtor collectors to recover two months rental on a line that they billed me due to an error in their side . I have emailed their debtor collectors proof of cancellation and the dates the email was sent but we still get hassled on a weekly basis . The POPI act has not protected my husband and family members as due this bill they also get people calling them looking for me . It is ridiculous and it is a violation of our rights where information protection is concerned . Hopefully customer services have the decency to respond to this complaint ( *** is the reference phone number ) Telkom please stop harassing us when the error of this account lies in your organization .