Vodacom account

2nd of February 2020 my wife completed a number transfer from her contract to the family account. An SMS was received to confirm that the number transfer has been completed to the family account. Final payment was double the monthly amount was paid for outstanding term of then contract, thus the contract was completed.

Now after two years Vodacom through MBD debt services, wants R24 000, for an account that has been transferred and is currently active on the family account previously mentioned?

How do we resolve this issue, since Vodacom legal division is not answering calls and in store cannot assist. We are lodging the complaint with the NCC as well. We have proof of the double debit order that was originally deducted to complete the contract at the time. During the two years we no communication from Vodacom until recently through MBD’s demands and threatening of black listing.