Greenflag put my premium up as, they said, the car is a year older, so (presumably) more likely to break down..Also my renewal notice for Green Flag breakdown arrived in the post today and it had gone up by £10 on last year without me needing their services. A quick check on the web price for the same cover and one phone call later and it was renewed at last year's price.
A quick phone call sorted their chicanery out!