********** contract upgrade

I had a wifi contract with vodacom, which expired January 2019, when I went to the store to confirm the contracts expiry, they told me I have already upgraded, I told them I did no such thing, they pulled up the upgrade contract, they conceded that an inside job of ***** has been Done, I wrote and submitted an affidavit as per their request, they promised that the forensics department will contact me within 5 days, the Matter will be resolved within 14 days, nothing has been done by vodacom, but they continue debiting my account. Even the staff do not care when you are there about *****, their concern is one taking up new contracts.