Account issue

A few months ago we had an issue with out account that every month we pay a higher premium. I was investigated and sorted. Now since the end of January we pay a different premium again and for end of February it's even higher. I cannot understand why on earth is there always an issue with this account. Does the employees at Multichoice not know how to do their jobs or what especially in the accounts department. I am sick an tired of this now. Can this be resolved one and for all.