Vodacom

I have been given permission for an early termination of my contract as Vodacom's technicians repeatedly confirmed no signal since the beginning of 2023. All they asked was that I pay for the handset, which I did and provide proof thereof, since then they claim I am in arrears and send whatsapps and emails saying my arrears will affect my credit score rating-I have sent at least 5 emails to Vodacom their reply was very confusing asking for my Id bank details etc. not answering my complaint in the least