Stop this phone shop!

I ordered my mobile phone through this website as it came up with the best deal at the time - being a complimentary gift of a refurbished Kindle Fire. This was the only reason I used them rather than another supplier. I received the phone a week or so later, without the Kindle Fire. The paperwork said I should have received my free Kindle Fire prior to receiving the phone, so I called One Stop. After 20 minutes on hold I was told I should receive the free gift in the 7 days following receipt of the phone. Okay. I then got a letter saying that one stop had signed me up for the gadget helpline service at a cost of £3.50 per month and that they would bill me for 6 months in advance and that I couldn't cancel this subscription without the agreement number, which I would receive in the next 7 days! I called up as soon as I got this number and they said that I still couldn't cancel it with the Gadget Helpline as although I had the agreement number, the paperwork wouldn't have been received at Gadget Helpline. I felt this was a delaying tactic, in the hope that I would forget about cancelling it before the first payment for 6 months cover at £21.00. For something I had never signed up for. Anyhow, a month later and I still haven't received my Kindle Fire. The Customer Services dept say they are not allowed to pass on the name of their Manager or Company owner. Customer Services also aren't allowed to make calls out of the office - so they can't offer to look into something and call you back. You have to phone them again which, on average, takes about 25 minutes to get through each time. Not happy!