Bad Service from MTN

I'm Nelly... I have a contract with mtn for a couple of months now... My simcard was ****** on the 1st of Sept 2019. Went to the store on the 2nd to get a sim swap. They apparently did it but I have been out of connection from that day till today. I was assisted by Lynnet Chinjekure, phetho nd kgomotso on different days with no help. I have been going to the store everyday to get it sorted with no help I'm being told of waiting for 24-48 hrs till today. Im soooo disappointed by their service. Im from the store today and I'm still being told of waiting for 24 hrs. I'm so angry coz I use that number for everything... Can I be kindly assisted.