More or less exact thing happened to me when the AA decided it was going to put my premium up from £150 to £244. Even had the nerve to say that as a "gold" member I would receive this and that for free. Told them I would be prepared to pay £150 plus 3% for year on inflation or I'd walk which indeed I did. Now with Green Flag at £150. Best part about it as a new member I could have got the AA for £150!!!!!!!!!!!!!
Any company that tries to shaft me loses my business - end off - permanently. :x