Bad customer service

Hi my partner and i app**** for a wonga loan with my partners details we then decided to settle the loan on the 4th of May 2020 using EFT transferred the money into their absa bank account that they sent us we used his ID number as a reference but till today the account shows that we owing which is not fair because we did pay them and now they gonna debit us for something that we have paid for We have since then sent them more than 15 emails and even faxed the proof of payment but the account is still owing. Worse their phones are not working Its not nice being ignored