I have been using home connect and for the past ten months I have been paying extra money my subscription is R378 n I paid R400 for ten consecutive months now when I request billing history and balance I'm told it's a prepaid services I don't have any bal

I have been using home connect and for the past ten months I have been paying extra money my subscription is R378 n I paid R400 for ten consecutive months now when I request billing history and balance I'm told it's a prepaid services I don't have any balance. No one explained to me that I must pay the exact amount not more not less. So I lost my R22 for ten months. I'm not happy at all