MONDO - DESPICABLE!!!

I would like to bring to your attention the ********** service received from Mondo Customer Care. I initially signed up for an MTN LTE contract in April 2021 but was signed onto a totally different contract. After seeing my first statement with the incorrect billing I queried it. All I asked was that they fix it by moving me to the correct contract. A simple task like this could not be done. I was told that in order for me to go onto the right contract, I would need to cancel the current contract and then re-apply for a new contract. They asked me to return the sim card and device to an MTN store which I did in May 2021. After countless calls to the call centre my contract was finally cancelled in November 2021. For the entire duration of this contract being on my name, I was being billed month to month for something I did not have. I was told that after the contract is cancelled, my money will be returned to me. Upon not receiving the refund I called again in December 2021 and was told that a credit will be passed and I should receive the funds by the 2nd week of January. I had received nothing, I called again in January and was told that the credit was passed on 19/01/2022 and that it should reflect in 5 working days. This was not the case, I've been calling almost every day and I get told the same thing that they have requested a PoP and they will send it to me. I called on the 17/02/2022 almost a month of being told that the money was credited and I have yet to receive a PoP. Last call made today 22/02/2022. Still, they cannot provide a PoP. This just clearly shows me that there was definitely no credit passed because if there was a credit surely they should be able to provide a PoP and it should have reflected in my bank account by now. MONDO - all I am saying is return what is rightfully mine!!!! I want my money back!!!!