MTN HAS NOT RESPONDED TO MY CLAIM APP AFTER 4 WEEK

I SENT MY CLAIMS RESQIEST FORM TO [Email Removed] ON 13/07/2015 AND I WAS GIVEN A REF NUMBER (***2). ACCRDING TO MTN, THEIR TURN AROUND TIME IS 5 WORKING DAYS. I HAVE BEEN TRYING TO CALL THEM FOR THE PAST 3 WEEKS AND THEY HAVE NOT BEEN TAKING MY CALLS. THEY JUST HANG UP ON ME. I AM SICK AND TIRED OF HAVING TO RUN AFTER THEM. I DIDNT HAVE TO BEG THEM WHEN I WAS PAYING MY PREMIUMS. I HAV BEEN WITHOUT A PHONE FOR ALMOST A MONTH NOW.