Disgusting service, product not delivered and lies about it being on its way

I purchased a trampoline from them on the 4th January and, as per their advert, will deliver within 10 days. I then received an email from them on the 17th and the 22nd January stating my goods will be delivered within 3 to 6 days and gave me a Tracking Number from Fastway Couriers. I tried tracking my parcel but it would not show anything so I called Fastway to enquire and I was told the people from One Deal a day are lying, they never released my trampoline for delivery!! After many messages and emails, I am now being ignored. I want the trampoline or my money back!