Unsatisfactory service at MTN Kwanobuhle

Around 20th May 2015 I visited the Kwanobuhle branch of MTN to migrate a Pay as you go phone number ***to My choice Top up R50.00. After a number of challenges and the consultant not clearly understanding what I wanted and no feedback in between, she phoned me a few days later to advise that she has selected a R55.00 contract for me. I was not completely satified but settled for it. Airtime was never credited to my account for June and july although the debit order went off successfully. I wentt back numerous times to the store, without any positive outcome and never receiving feedback until I follwed up again. I asked for the matter to be escalated and it was given to a lady called Sharon. The owner of the shop, Shawn, came to see me and assured me that the matter will be resolved. Well it is now August and i still had no feedback. I have received R55.00 airtime on 14/08/2015 but what happened to my airtime for June and july amounting to R110.00? This matter has been dragging from May and in August not resolved with no Feedback???