Dial-a-Phone is a trading division of Phones 4u Limited
Enough for me to stay away tbh.
CPW are undoubtly the best IMO for cash/chequeback. I've never had a problem *touch wood* lol My dad had an issue of a delayed payment but it came through a couple of months after an admin error of some kind got sorted.
e2save.com are good but a bit picky, can't be an online bill, must be original, send at very odd times but has been working so far.
CPW aren't doing such great chequeback deals atm, but generally, nearer xmas and after new year, they come about. e2save offer very good deals. My current CPW is £45 for the year for 800mins and 500 texts, with free voicemail and itemised billing (think these are free on all contracts now, but remember some charging in the past). I got an upgrade sim only deal as there wasn't a phone I liked. So same number, same phone, low cost.