MTN please teach Anelisiwe Dlamini and staff the meaning of Customer Support

Called MTN on the 4th of June requesting a refund because they debited my account although I already paid my subscription on the 28th. I received a case number BO***. That same day Anelisiwe Dlamini asked for a proof of payment via email which I sent to her , a screenshot. She later asked me to convert it to a pdf format which I did. I sent it day before yesterday and yesterday as an attachment. Today she closed the case without resolving it,WHAT CUSTOMER SERVICE IS THIS!!!!! If I could give u a -10 Anelisiwe I would. Please get ur act together and exercise CUSTOMER Support, I'm appalled to say the least. Now I have to start all over ,you playing for time I see