TFG ISNT INTERESTED IN ASSISTING WITH CUSTOMER QUERY

On 21 December 2019 I made a payment on my account. On 15 January 2020 I queried my credit only to be told that my account was in arrears. I explained to the that I paid my account on 21 December and was asked to mail the proof of payment. As I did an eft through my bank so I sent proof via my banking app. I was told thry would allocate the payment and credit my account. On Thursday 16 January 2020 I recieved an email threatening me with handover as my account wasnt paid. This notwithstanding the fact that I spoke to them a day earlier and sent the proof of payment. On the 17th of January I recueved my statement still reflecting no payment. I contacted them again and spoke to Mia Jacobs who told me to go to my bank and get a letter of proof of payment. I questioned her about this and was told it was procedure and if I dont they cant help me. Twice I phoned and I get 2 contradictory answers. Do they know what they doing? My logic says to me that if my payment was not allocated it would show on their bank statement. Its really easy. In my opinion they are just too lazy to do this. Mow the customer has to do the run around. Really...what an organisation...