Paying for non -existent services

I have run out of words when it comes to Telkom. I went into a Telkom branch in 2015 to move and cancel a line. I filled in the forms and was given an official Telkom notice with an employee name,number order number etc. A few months after i moved i received a notice to say the line could not be moved as there was no infrastructure in place yet. I then called back 3 months later and it was confirmed line was cancelled but that i had to pay for an additional 2 months.Thinking this was the end i paid the additional months and let it be. Low and behold...a year later i received a call stating that i was in arrears with Telkom...upon inquiring on what the arrears was for....was told it was for Internet as i had adsl on the cancelled line. I then advised the consultant that the line was cancelled and that how was i using internet without an adsl line? As it was discovered..telkom did not bother cancelling the adsl charges...just the line and therefore was liable for the charges....again...after a lot of too and fro and 13 calls later through the years...all with reference numbers...i was advised that the issue was resolved and that telkom had removed the account....but wait for it,,,,towards the end of last year..i received a call from a company called Nu-debt on behalf of Telkom...demanding that i pay...wait for it....5 years off accumulated adsl costs...bearing in mind...still do not have a line since 2015.Too top it all off...all of the consultants could not understand how i was using adsl without a line...and telkom themselves admitted there has been no activity on that line or account since 2015.Now here is the clanger...even after producing the paperwork i was issued with....after telkom confirmed they have such a person working there,,and even after showing them an sms from them stating the line could not be moved....they could not find sufficient evidence to credit this account..SO tell me...am i crazy or is this just downright *******ion?