Bad experience with Sim Swap

Good Day, i've been having such a bad experience doing a sim swap with MTN. i contacted their customer service centre, they advised me to visit the MTN store, i visited the MTN store at Simmonds and Selby street, they as well couldnt assist, and logged at ticket for me to get the number re-activated, because according to them the number has been de-activated that is why the sim swap cannot be performed, and this will take 48 hours to be resolved, after 48 hours i then contacted the customer service centre, they advised me that the number has now been activated, but MTN has taken the number back and cant give it back to me, after a whole week of running up and down, making countless calls to MTN, no one is able to assist me with this, i also visited the MTN store at South Gate mall to see if they cant assist, they also showed me the sim shows active but they are also unable to do the sim swap