I paid my account on the 30th September, an amount of 135 at Pep cell

I paid my account on the 30th September, an amount of 135 at Pep cell. Multichoice again debited my account with an amount of R339 for what i do not know. Then my services were cancelled few days back i called they were reconnected today again my services are cancelled. I lways complain every month end it seems like there is a **** going on and no one is willing to assist.