I have Greenflag via the Club and had call to use them yesterday.
The car wouldn't start and all the warning lights indicators etc were flashing , I called Greenflag who organised an engineer to come out but told me that I could not call them out again for the same problem in the next 28 days.
He duly arrived tried to start it, which failed so he connected his jump start thing and bingo it fired up , and he advised the battery was cream crackered . I told him I would go and get a new one straight away , off I went to Halfords to have one fitted , they took it off and before fitting a new one tested the old one and declared it as being ok with nothing wrong with it. Due to the 28 day thing I felt I had no choice to have the new one fitted in case it failed to start again . Even though still in guarantee they cant refund/replace as they say it is not faulty.
I have contacted Greenflag who are looking into it but I don't hold out much hope and look to be £130 down on the day.