POOR SERVICE AND DEACTIVATION OF LINE

MY CONTRACT WAS UP FOR UPGRADE. I DID NOT WANT TO UPGRADE AND WANTED THE NUMBER TO GO OVER TO PRE-PAID. THIS NUMBER IS USED FOR MY BUSINESS!. CUSTOMER SERVICE DECIDED TO JUST DEACTIVATE MY NUMBER. SINCE SUNDAY THE 22ND MY NUMBER IS OFF AND I CANNOT RECEIVE ANY BUSINESS CALLS. CALLED CUSTOMER SERVICE ON MONDAY, SPOKE TO A GUY WHO SAID HE LOGGED IN THE REQUEST TO GO TO PRE-PAID AND HE GAVE ME A REFERENCE NUMBER. TODAY MY PHONE IS STILL OFF, SO I CALLED AGAIN. THE WOMAN I SPOKE TO SAID THAT NOTHING HAS BEEN LOGGED ON THE SYSTEM. SHE SAID THAT SHE HAS SORTED IT OUT AND THAT MY SERVICE WILL BE BACK IN 3-7 WORKING DAYS,GAVE ME A REFERENCE NUMBER. I CALLED MTN STORE TO MAKE SURE THERE HAS BEEN A SUBMISSION AND THEY INFORMED ME THAT MY NUMBER CAN ONLY BE RESTORED IF I GO TO A POLICE STATION AND HAVE AN AFFIDAVIT DONE. IT SEEMS THAT MTN STAFF TAKE DECISIONS ON THEIR OWN AND FROM 1 PERSON TO ANOTHER THEY DO NOT KNOW WHAT THE EXACT PROCEDURES ARE!. MY CONCERN IS THAT I AM LOSING BUSINESS BECAUSE THIS IS MY BUSINESS NUMBER FOR OVER 3YRS NOW. HOW CAN MTN JUST DEACTIVATE A NUMBER???!!!. I CANNOT AFFORD TO HAVE THIS NUMBER OFF FOR 1 MORE DAY..