BILLED FOR SOMETHING I NEVER RECEIVED

On the 11th of January 2016 i made an online order of luggage bags on the Homechoice website. I got a reference number for the parcel and 2 weeks later i called the courier company to follow up on my order and they told me they had failed to deliver because Homechoice had given them the wrong address, i then gave the courier company the correct address, but still no delivery was made. Sometime last week i got a call from a lady at RTT, the courier company telling me my parcel would be delivered on Tuesday the 23rd of February and i asked her to return the parcel to sender as i was so frustrated by the long delay in delivering and i also called Homechoice to make arrangements for them to cancel the order, both insisted they would still deliver the order. RTT tried to deliver the order yesterday (23 February), i was not at home and the driver called me and i informed him to take the parcel back as i did not want it anymore. Today i received my statement from Homechoice and i have been billed for the bags, how they expect me to pay for something i never received, i don't understand, it's not my fault it took them 6 weeks to deliver the bags hence cancelled the order!!! IT'S A *******!