Telkom frustration due to nonexistent service

I used Telkom's online portal to cancel my ADSL service on the 30th of November 2021. I have received threats from lawyers, debit collector's and Telkom claiming payment for the canceled service. Contacting the billing inquiry's on 10210 or *** is like a merry-go-round where your mail is either ignored or the reply is unsatisfactory or even totally unrelated to your query. I really don't know what to do to resolve the issue as you only have these two contact points.