Poor service

Waited 13 months for Telkom to change my contract number to the correct number. Now the sim card I was using for the correct number dies not work for that number anymore. Went to Telkom store to do a sim swap as I need that number for business. Now because my finger prints don't want to scan in store I have to wait for them to create a case and then they will phone me to come and get the new sim. They can’t tell me how long it will take. The MRE department who changed the number is just ignoring every email I have sent, but Telkom phones me nearly every day for a new contract or upgrade... they want business but I am losing business