Very ****ed off and highly irritated

Homechoice has really ****ed me off and ****ed up my credit score, I ordered a few things from them the agent got the order incorrect so when I asked her to fix it she said I would have to call customer service after she messed up the order, I could never get ahold of customer services they have never responded to me emails with regards to asisting, I when I received a debt check on my account I didn't approve it because I was not willing to pay for something I didn't order then when I tried to sort it out the agent tells me that I went from having 3800 credit to no credit because I cancelled the debit check... Still till this day I have no received my order or received any communication from the company and my credit score is reflecting this as an account.... Before I take legal action against this company please sort this issue out... Contract details ***