New upgrade for my S26 Ultra

Its time to upgrade my phone. I phone mtn clearwater. I spoke to Thuba gave me her cell number and send all my details. I think I'm with MTN since 2006 contract. Now they say I'm going to wait 3 to 4 days to get my new phone. I mean I'm running a business. I want to go to the store and get my phone. My number is ***. This is bad business now that I'm a client for more than 20 years