Billing *****

MTN ****s people, I have contarct with them of is my second contract, I didn't have any problem with my first contract I guess so, because I was hardly read mt statement till I made cellphone updates on my account, I found out that wrong amount was been debited, I then went to outlet for help first was in three rivers, the consultant said he logged the complain within 24hours I will get notification, I got notification said is been sorted though they won't reverse the amount but next month they will take only the diffrence, month end came they took even more I went to festival outlet explained my situation they consultant said I have to go where I upgraded he can't help, at greenstone where I upgraded they said is been fixed, the same thing happened and I opend again in eastgate, they told me the same story, now I don't know what to do because this is a ***** and I am going to open the case against MTN if they don't terminate my contract with immidiate iffect