Waiting for Online order for a month!!

I placed an online order for stationery on 18 January 2016 from Waltons' website. I paid via credit card immediately and was informed it would take 3 - 5 working days to receive my order.<br> I received half the order 5 days later with no information as to why the other half didn't arrive. I then tried calling and emailing and got no response whatsoever, suddenly a week later I received 1 more item from the order.<br> To cut a long story short, we are still waiting for an item on this list and it is now 17 February 2016. I have not been contacted by anyone regarding this missing item. No one gets back to me from the company and my emails go unanswered. I required the items urgently hence my online order and now I've had to buy duplicates from the opposition stationers. Waltons your customer care is appalling to say the least!! I want my goods or I want my money back URGENTLY!!