MTN BAD SERVICE

ON 01 APRIL 2015 I RECEIVED AN SMS THAT MAKES AWARE THAT I AM ENTITLED TO AN UPGRADE. I PHONED 808 AND THE TRNSFERRED ME TO *** AND AWESHONE ASSIST ME. SHE SAID THAT THERE IS A LOCK OR A BLOCK ON MY LINE I HAD TO PHONE 809. I DID PHONE 809 AND THE OPERATOR WHO WAS ASSISTING ME SAID THERE IS NO BLOCK OR LOCK ON MY LINE. SINCE 01 APRIL I AM STRUGGLING TO DO AN UPGRADE. I AM INFACT IN CREDIT BY R11.40 AS MY EMPLOYER PAYS MY CELLPHONE BILL. WILL SOMEONE COME TO MY RESCUE PLEASE AS I THINK YOUR SERVICE STINKS AND CANT COMPLAIN ABOUT YOUR SERVICE AS THERE IS NO SERVICE. I WAS ALSO REFERRED TO A MBALI MAVUZU WHO IS A CREDIT CONTROLLER AT *** WHO NEVER ANSWERS HER PHONE.