Not received

I ordered a huge set from Homechoice in September. The first debit order was taken 1st October. I was notified that my items were handed over to a courier. Now going through my messages I see that the items were returned to the warehouse. I reversed the debit order as I was not going to pay for something I did not receive. Then I receive an sms saying my payment of a double debit order will go through the end of October showing me a balance. I then requested a callback as when I called the lady could not hear me. The lady that called me back was helpful and cancelled the debit order. The reason was the items were returned - and believe me there is someone at home all day so it was not delivered by the courier - but never credited. Scary as this means the debit order will continue to go off. So glad I got someone helpful today, but their systems need to be looked at.