Mtn a waste of time and money , worst service ever

In the middle of July i decided to upgrade my current contract at the mtn store in chatsworth , i chose a s6 and a few days later i experienced a problem with the phone i then phoned the store and they said because it was after 7 days that i could not change or migrate my contract because of the problem , they could only send the phone for a warranty assessment , a few weeks later i was granted a new phone however i told the sales representative(chantelle) i want to change the contract and chose another phone because of the problematic device. Chantelle spoke abruptly and said she cant do the migration or change the contract, i proceeded to say that i do not want the phone and left the new phone at the store and said i will contact the manager. The manager said to cancel the contract i must call customer service and i called customer service and they were confused because apparently the manager **** because the cancellation could be done in store.Ai few days later i phoned the manager and told her what customer service said and said if she doesn't comply i will post the problem on hello peter , she them said i dont care and i can do what i want, i wasted time and money on this