Homechoice falsely blacklisted

I have been buying from homechoice since the year 2000 until 2008 when Homechoice wanted me to pay for goods that they did not deliver to me , the delivered that to somebody else in a different address. I tried to fight that with them over the phone with no luck , they sent the sheriff to me at my workplace, I explained to him about my position ,he never came back to me instead Homechoice blacklisted me for the depth which was not mine.I stayed there in the credit bureau because of them. Now that I am no longer there I tried to go back to them and buy their products, I have been sending SMS with no luck , the don't respond to my SMS ..What do I do , because I still need some items from their shop and I still believe I was falsely accused. Please help