MTN BAD SERVICE

HAVING PROBLEMS WITH MY ACCOUNT SINCE MY UPGRADE IN JANUARY , THEY MOVED MY NUMBER TO ANOTHER ACCOUNT WHILE I HAVE A CREDIT ON THE ACCOUNT WHERE MY NUMBER WAS PREVIOUSLY. i HAVE ASKED THEM TO CLOSE THE ONE ACCOUNT AND TRANSFER THE CREDIT AND THE NUMEBR TO ONE ACCOUNT,NOW MY LINE IS SUSPENDED AND THEY SAY 2 TO 5 DAYS WHILE MY QUERY IS BEING RESOLVED .if they could not resolve it in 5 month HOW THEY GONNA RESOLVE IT IN 5 DAYS