Disgusting Customer Service - MTN

My friend had a contract with MTN for a long time now and it was time for her upgrade. She spoke to an MTN sales rep that took all her details, the phone she wanted, and what contract she wanted. She then selected a Samsung S20 FE in mint green. The phone got delivered and it was the wrong color, she then phoned MTN asking them to just swap for a different color and they said that she needed to book the phone in and they will get back to her. This is now taking two weeks and she does not have a phone and MTN is still messing her around. She then decided to cancel that contract and go into the shop to get it sorted but now they giving her issues about canceling and every day is another excuse to get the contract canceled. The customer service of MTN is absolutely disgusting, the fact that they can sign you up so quickly for something but then take their sweet ass time to change it to what you want while still paying for something you don't want is absolutely disgusting. These people should not be allowed to do business I am sorry...