Highly disappointed in the lack of service by CELL C

I have two cell phones with cell c and since JUNE 2021 they failed to debit my account due to technical difficulties. I started paying with my banking app, and ever since then there has been issues with allocating the money on their side. I also emailed my proof of payments numerous times to different addresses given by cell c consultants. Last week i spoke to a consultant who gave me her personal email address to send proof of payment. She also rep**** that they have received my payment. On Saturday i get another call saying that my account is still in arrears. This has been going on for months now. Each and every consultant keeps telling me a different story every single time, and this when i have proof of my payments. I wont recommend anyone to take out a contract with cell c, this passing months has been nothing but stress and sleepless nights.