I had a dispute on the BA card, service was terrible, took 4 months to get an answer till finally hearing I won the dispute,(partially because the merchants ignored their request for info) then the credit posted to my account, thenI suddenly see they reversed the credit because the merchant issued a rebuttal that's all they tell me nothing more, and keep saying if I want I can redispute it as first case is closed, when I tried redisputing it they said its to late its past the time frame. so that was it just had to give up as there was no one to talk to anymore.