Disappointed with MTN BALLITO.

HI my name is lalitha kissoondutt. Ive been a loyal customer for years. My contact ended in October I decided to get a new phone. My sales lady was Zuma from mtn ballito. She showed us a few phones and told us the Samsung was good. We did settle for it. She asked if she could set up the phone this was around 10 3 Sunday's ago. Time was going by 12.30 and still nothing. We were celebrating our 31st anniversary hubby and I so she asked us to go to lunch. At 3 we arrived at Mnt store only to notice her coming from vodacom store which she advised us that she went there to help get the phone set up. Which she never had much luck doing. Wen we got home we put the phone to charge only to notice it was heating really bad. Early next morning hubby was back at Mnt ballito store. Zuma informed him that I was needed bcos contact was on my name. I did get there only to b told nothing was wrong with the phone. I insisted the phone did heat. Manger Andrew said he needs Samsung to check the phone. I called email no response. Today Mnt message me saying my phone was repaired and will be ready for collection in 3 to 4 days..i never used the phone. Why should I take a repaired phone. This is ridiculous 😡😡😡. I want a new phone then I will continue with my contract. I never had the phone for more than 24hrs. Your employer took the phone to vodacom to set with breech your contact. So plz understand why I'm so disappointed and angry and frustrated. All I want is a NEW PHONE. PLZ look into this matter and contact me ASAP. THANK U regards L. Kissoondutt..