Horrific Service Provided By MTN

Good day MTN, I would like to express my complete utter dissatisfaction with the service which I was provided MTN Ghandi Square. I did an upgrade Friday the 15th of December. I then wished to cancel the contract the following Monday. I was advised by the store that I should call the call centre and then referred back to the store. Upon going back to the store I was greeted by very unhelpful staff. Today I receive a call from a Johannes at the store, advising that his manager Mr Frederick Van Niekerk is not willing to assist me with the matter as he is sick and tired of people cancelling as I am the third person cancelling. I have left the phone with the store and am really hoping a competent staff member of MTN can proceed to cancel my contract. I am truly disgusted with the service I received. I await your call.