I want my money back

I have two phone contacts with mtn I wanted to cancel one and left with one, I phone mtn custamercare then they said because I want to make early termination I will be charge the amount of R1637.00. They also told me to use my cellphone number as reference. On 2017/0714 at 12h14 :56 deposited the amount of R1650.00 at absa reference was ********** 121 after two days I phoned mtn to ask them to do cancellation they told me that the money is not reflecting in their system. Then they told me to call again after 5working days. I call again after that 5 working days still they told me that the money is not reflecting . Then they said I must send proof of payment to ********** they reply to me said they received my proof and ref was ********** 3 they said they will log complain why is not reflecting.i call again they said still is not reflecting this time they give me two emails to send proof of payment: ********** and they reply with ref ********** 0. Still it was not reflecting. I send again proof of payment to ********** still not reflecting . Went to absa to check what was wrong and they said the money is in the mtn account and they can not print statement for me because is not for me. I went to mtn shop still I didn't get help. Know I want my money back . I am very disappointed with mtn I have been using it for long time but now I'm really disappointed