Arrangement and payment made, fees still pilling UP

My Virgin Active account is currently with VVM, after a lot of calls i have made an arrangement on the account, and i have also paid what i could afford, hence i have told them multiple times that i am unemployed and CAN NOT afford any other amount than the amount that i am paining... Still each day i get call more than once, as far as i understand there is an administration fee for each call to me, Fees on this account is already at a total of R552.00 - please resolve this matter or alternatively provide me with the necessary information to approach the CPA in the regard, i can not afford any more fees... if this is how things are gowning to keep going I WILL STOP PAYING THIS ACCOUNT, because you guys are ROBBING me of the opportunity in correcting this account!