Vodacom is the worst and *****s my money each time

If I could give zero stars I would.

After paying my outstanding amount to vodacom I phoned them just a day after to have my contracts canceled with as everything was paid up to date. They said I need to contact the legal team, tried that and no one could get hold of them. Once my accounts showed that it is active I immediately phone the day after to have them canceled it and just a few day later they sent me an invoice for two months which didn't make sense and then thereafter I get an email stating my contracts has been canceled for both numbers and my numbers are now prepaid numbers yet they still invoicing me and handed me over to a debt collector which doesn't make sense as my contracts are canceled with them.