debit orders

I purchased furniture from Bradlows and my 1st debit order was to go off at the end of October but due to Bradlows changing their system it did not. I was not aware of this as i have just lost my leg. On the 17th November i get a call from a consultant who wants to know if i have enough money in my account to do a double debit which as i told her was not my fault as their customers should have been advised of their system error. They have all my contact details and yet no one had called me or sent an sms informing me about the debit order. i have spoken to Phumlani (team leader) and informed me that if i do not pay the double debit order i will be listed as an arrear customer. i think this is totally unfair as the problem is with the company and not me. He did promise to call me Monday the 20th November to give me feedback and till today no call has been made to me. The customer service at Bradlows is terrible. Calls i not answered or they drop the call on you. You get transfered from one consultant to another. Now i am waiting for someone by the name of Precious to call be back( she promised she would at 3) and i am still waiting. I am so fed-up with calling the company and i now want Bradlows to take their items back. It is the last time i deal with this company.