I have been waiting for my account to be canceled, I have spoke to people from Mondo and I was told MTN needs to assist

I have been waiting for my account to be canceled, I have spoke to people from Mondo and I was told MTN needs to assist. I call MTN and they tell me Mondo must assist. I want my money back as I was told I will get it last week. It’s been a month now no help no guys this is not on. I was given numerous references numbers that don’t even help