Airtime depletes and instalment increase

I want to find out how is it possible that I get airtime loaded on the 1st March and on the 2nd March 2020 my balance is on R0.00. I phoned customer service department on Sunday and I was told that the airtime depletes because I'm subscribed to some Honky Dory, something like that which deducts R10.00 per day. I don't remember subscribing to such nonsense. I want my 2 months airtime back because this has been happening for two months. As if that's not enough my monthly instalment keeps increasing, how is that possible?, how does Vodacom come up with these instalments. I signed a contract and the amount stated on this month's statement is not what I signed up for. I tried getting hold of customer care since yesterday I still can't get through to them. If it's not your flippin' network problem, it's your client services. I want someone to sort this mess because clearly somebody is not doing his job right.