I phoned 24/7 on 9 separate occasions and got cut off. I had a problem with my boiler as my partner is disabled it was pretty urgent. I then went back to British Gas who were fantastic. I tried to organise a gas safety check and that basically was near on impossible to sort out.
I think this is probably the worse company I have ever dealt with. I also have contacted Trustpilot regarding some of the there tactics to get positive reviews.
Most worrying is that they are not regulated by the financial ombudsman so your best option is to just give the 3o days or don't even think of joining them to start with. I wished I had read the reviews on Moneysupermarket and other site and not Trustpilot.