WORST SERVICE FROM THANDEKA NGWETHA

I had the worst service from a call centre agent by the name of Thandeka Ngwetha. I had a query logged with mtn relating to an issue with my data bundles. I have be sent from pillar to post by the contact centre and technical support team. I was referred to speak to one of the supervisors as no one has worked on my query since July 2015. THANDEKA NGWETHA had the nerve to tell me there are no supervisor available and I offered her that I would wait on the phone until one is available. She told me that I should call maybe after 15 minutes and I persisted I would hold for a supervisor. She had the nerve to tell me THERE ARE NO SUPERVISORS AVAILABLE AS THEY ALL GO HOME AT 18H00. She had the nerve to threaten to hang up my call because I am waisting her time as there is no superior than her to help me. She later handed over the phone to one of her friends to confirm that no supervisors are available at mtn after 18h00 and I called at 18h08. . I know for a fact that agents don't work on their own and someone superior is always available. My phone is still not fix. I am disgusted by this type of service just for asking for a simple supervisor. I want to make sure you deal with her