Bad service and no response at all

I had a DStv price which ended in Oct this year, and thereafter I took another price lock. On the 25 will be my first-month paying. I get an SMS today saying I will be debited R4000.00. so I called the Call center asking what happening they advised that I still getting charged for the old price double ( 899 x 2 ) plus the new one , so they need to email price lock department and they can take a week to call you back *** !!!! I not paying R4000.00

Why doesnt the price lock department have a number !!!!! and a week !!!! i need somone to call me NOW