Charmain Oliver

I have had no proper help since Monday 27/03/23. Took out a new contract on 17/03/23 and the DSV Courier came to deliver on Saturday 25/03/23. His machine could not read my thumb prints so he left with the phone. I have been phoning MTN AND DSV since Monday. I have been put through from one department to the next and cut off. I feel totally lost. How can a big company like MTN have such bad service?