pay for nothing

Email after email, call after call... All you get is reference numbers. When I call back with the reference, I am told it belongs to someone else's query! 19 February 2015 I made an electronic payment and since then, payment was not credited to my multi choice account. I have sent proof of payment on numerous occasions on email and handed copies at the Umlanga office, I even sent the pop to Carol Vilakazi, who either can't read or cannot use a pc as since I have not even got an acknowledgement of receipt of my email from her. How or when can someone assist with a resolution.