Well I ordered a rainOne wifi package of R595 per month but the sales agent didn't inform me right from the beginning that the first payment will be drawn from my account on the 1st of August which is tomorrow

Well I ordered a rainOne wifi package of R595 per month but the sales agent didn't inform me right from the beginning that the first payment will be drawn from my account on the 1st of August which is tomorrow .I just placed the order and did the upfront payment to receive my order.So how can I pay R595 tomorrow when I haven't even received my package yet. I thought I was gonna only start paying from the 1st of September. Please assist me as soon as possible, even if it requires me talking to a sales agent again.