TRY TO SORT OUT A BILL

I UPGRADED ONE OF MY LINES WITH TELESALES A YEAR AGO BECAUSE OF AMOUNT OF LINES I HAD AT THE TIME THE OPERATOR AGREED TO SOME SPES ADD ONS ON TOP BY MEANS OF EXTRA FREE MIN AND DATA AND THE MIN IS SAME ALSO ANYTIME AS THE NORMAL MINUTES FIRST 3 MONTHS NO PROBLEM THAN NEXT BILL MORE THAN DUBBLE PLUS THERE IS STILL FREE MIN LEFT COMPLANING FOR 3 MONTHS GOT SORTED OUT AND A CREDIT NOV THE PROBLEM WAS BACK AND FOR WEEKS ALL I GET IS SMS EVERY WEEK I REG. THE COMPLAIN FROM CUSTOMER SERVICES TELLING ME OVER AND OVER THE SAME STORY THERE IS NOTHING WRONG JUST PAY SO NOW I GOT PLENTY FREE MIN BECAUSE I PHONE LESS EVERY MONTH BUT THE BILL IS EVERY MONTH MORE AND WHEN I PHONE IN ANSWER I GET IS WE PASS COMPLAINT ON