horrible client care service

I am really getting annoyed with MTN's service! Why can ONE PPC not assist me? Why does it always have to be different people and they dont even know what is going on?! In Feb, I emailed MTN asking them if my debit order was successful and Tarryn Bennett rep**** that it went off on the 31st. Now in March,a double debit went off. I enquired (took ages to reply) and now different people keep asking me different silly questions whereas one person would have had a knowledge and history about the situation. Now they keep telling me, they have refunded on the 6th and it reflects on their system. Its now the 19th and still no refunded has been received. I have sent them bank statements and they blatantly ignore them (Thobekile Khuzwayo) and I am honestly getting EXTREMELY FRUSTRATED because I have to pay monthly and I adhere to the contract rules but you guys cannot even commit to good service! No man, fix this situation and make sure the money is in my account asap! YOU DEPOSITED IT INTO THE WRONG ACCOUNT. FIX IT