Mondo frustration

On 2nd May 2023 Mondo offered me a cell phone contract (upgrade) for two devices which I accepted. On 5th an 10th May 2023 the devices arrived but it was the wrong devices. I immediately contacted MTN and was told to return these devices. The devices were returned to our local MTN store in Oudtshoorn and IRMS reference numbers was given. On 17th May 2023 these IRMS numbers was given to me. IRMS…… & IRMS…….. On 17th May 2023 I contacted Rewardsco and explained to them the situation that I want the two contracts reversed so that I can apply for new contracts. Reference no ………… was given. Within a few days the one contract 083 ………. was reversed, but till today with lots of frustration and unhappiness the other contract 083 ………. has not been reversed. Till today it is 128 days, 37 phone calls to MTN and Mondo/Rewardsco and several emails and still no results. End of June 2023, R9200.00 and end of July 2023, R9920.00 was taken out of my bank account. The R9200.00 was immediately credited back to my account. The R9920.00 was taken out of my account without warning without a bill or any statements and has still not been credited back to my account. (REF no from credit department; 1-……………) On 23rd August 2023 I spoke to Trevek from Mondo and he confirmed that this problem is coming a long time and that this reversal was supposed to be done within 3 – 7 days. (Someone slipped up) I was told that he will investigate it and that I will receive a sms or call to confirm that the reversal is done. Till today I did not receive anything. Also, since end of May 2023 I have paid R370.00 per month for a device and service which I do not have. I will expect that those moneys also to be credited back to my account. It is extremely frustrating to be treated like this, to pay for a non-existent service and that money to be taken out of my bank account without reason or warning. I will appreciate that this situation be sorted out immediately and moneys be paid back into my account so that I can carry on applying for a new contract. To work through customer care is an absolute frustration.