********** and unprofessional service

I placed an order with HC in December under the guise/ demise that my first installment would be end of February. The worked out and agreed installment as per order was R224/ month. However, before I even got the goods I was billed in December already before I cancelled the order. Despite this they bulldozed their way through and sent the order through which my wife fell in love with and did not want to send back. End of January(a month before agreement) I got a statement saying I must pay R364(from what agreement I don't know). I paid R400 regardless, then surprise surprise end of February I got a statement for R584. Where they are even getting the figures from mesmerizes me. I tried calling the Call Center and was on hold for 20 minutes(and had to cut the call before getting any assistance, I'm sure if I was on the order queue I would've been assisted instantaneously). Can someone from HC please call me and explain these shenanigans and whilst we are at it send a Settlement Bill. I am sick and tired of these rip-offs and I need to pay this account, and have these guys throw my profile deep down under the sea