MCS & Telkom

I paid my last invoice in January, I then cancelled my account, from that point there was no communication from Telkom via email, sms, or calls. Forward to september 2019 and I'm receiving threats from MCS and it seems they want to charge over R800 in interest etc where I've just learnt that there is an apparent outstanding amount.

From a consumer protection act I am curious how a company can hand one over after having not pursued any debt owed themselves first. Added to that when I log into my Telkom account it shows, once again, that no amount is outstanding.

This company is curious to me & I hope to get some answers or have them investigated along with Telkom on unfair consumer practices.