They also advertise that they will repair any one fault, no matter how big or small the job, for a fixed upfront fee inc. labour & parts. However, when I booked a call recently and had £l68 debited to my a/c in advance, after waiting several days for the engineer to turn up he told me the problem was a faulty motorised valve which wd have to be replaced which wd entail draining down and as that wd take more than an hr he couldn't do it. No apologies, no offer to quote for an extra charge and/or come back another day to do it. Just bye-bye and he wd arrange a refund. In my book, that's sharp practice, breach of contract and misleading advertising. I complained and the person who phoned me back said she wd draw the ad. to the attention of her manager. Again, no sympathy or help. Couldn't care less.