I have been charged by Abbey for going over my agreed overdraft limit by £15. As I believed the initial charge of £20 was unreasonable I refused to pay it, and consequently have incurred a £20 charge every month since. They now claim that I owe them £129. My tactic has been to continue refusing to pay and watch the original unreasonable charge accumulate into a ludicrous charge. I have explained to Abbey that I have no intention nor means of ever paying the charges but have been willing to pay them the £15 from the outset.
Im guessing this is not the recommended approach and maybe I should pay the charges and then try to reclaim them. As it stands, do I have any grounds to start legal proceedings against them?