MTN Direct WORST SERVICE EVER!!!

I upgraded through MTN Direct on the 6th of September. I chose a iphone 11 and the color they had in stock was white and I approved it. They said that in 5-7 working days my new phone will be delivered and that the courier company will contact me in connection with the delivery. By Monday the 16th no one has contacted me so I phoned the upgrades department. They told me that my upgrade is stuck as there are no stock of the iphone 11 and someone will contact me. I phoned again and again as no one is phoning me and every time they tell me someone will contact me. I phoned again today and asked to speak to a manager, the lady tells me that she was informed by her manager that she must transfer me to the customer care department, they tell me no I must speak toe the upgrades department ….. who de hell is going to help me. I am sick and tired of phoning them just to be transferred to the next department everytime having to tell the story again and again. I am furious!!!!!!!!!!!!!!!!!!!!!!! Worst service ever. If you told me you have stock and not informing me you don’t have then you must give me a better phone for the same price!!!