Complain

I call MTN on Thursday to opt out for extra time and I was assist by Letlhogonolo Sedumedi and he advice that it will take 7 days to be cancelled ,I was fine with that .Friday I buy R15 airtime with my mobile app it was around 8h15am ,8h37 I call the customer services I spoke with Keneuoe and she advice that I should wait for 2hours it will reflect ,ok I understand that 2 hours pass without reflecting, I call again the consultant that I speak with was Monalisa she didn't assist she said I should enquire with my bank ,I tell her if my bank has an issue on the app it give us the error that the app is out of services now and she said it's not their fault. She was so rude to me .I have to buy the airtime of R5 from the extra time that I want to cancel. And that time have emergency I have to call someone .I bought another data of R12 for WhatsApp and it reflect on my end. So, to MTN I want to know about my R15 airtime that I didn't receive from you if it will be resolved or what?