MTN’s shocking lack of care and or service!!!!

I am so disappointed by MTN. Purchased a new phone by signing on to an increased contract. That was easy, seems like they keen to get your money. Phone was delivered. Ear mic wasn’t working. Called to ask what to do. Was told return to the shop because it was inside the 7 day return policy (same day as received), they said they’d replace. It’s now more that a week and I don’t know where my phone is, called every day been passed from department to department and even back to the shop and no one will help. Even when I made a big noise in the shop at clearwater mall the manager (I have his name) promised to get back to me and three days later still no response. I recommend you think very carefully before you sign up with MTN. They behave like they don’t care about customers. I’ve never missed a payment never been a customer of another cell organization and I fell this is some of the worst services I have ever received. I’d prefer to terminate my contract now. Disappointment doesn’t begin to explain how I feel!!!!