Disgusting customer support

Hi MTN

I am a business customer of yours and recently upgraded a contract and received a new Iphone 11. The screen stopped responding in a strip down the centre so when i tried contacting my account manager i got a reply from somebody else telling me to take my phone in to my nearest MTN store which i did. It is MTN Farraremere square and the contact there is Reuben Durais. I took my phone in on 20/01/2020. i was told it will take 21 business days. I have just received an update from him to say that the phone is still at the branch and hasn't even been received in the repair centre. i have tried calling and emailing my account manager (Simon Dorn) and i have been ignored. i am not interested in waiting anymore. i want somebody from management to call me now to explain the hold up and my account needs to be credited for this month as i havent had a phone so i will not pay for it. I need a brand new replacement phone next week. this is a business account and therefore the phone is used for business. MTN is now direclty impacting my business as you can't provide what i am paying for. i need this sorted out now