They did unauthorised reassessments number 4 and 5 when all I asked for was a call back from credit management! Apparently they don't have verbal conversations with anyone externally nor internally! WTF? I have now gone above supervisor to manager level and have lodged a detailed complaint with clear outcomes requested: remove the unauthorised unnecessary credit checks and approve the damn Signature card at the minimum credit limit. I was supposed to receive a call back yesterday...yeah, that didn't happen.
I wish you the best of luck there. I had the same issue with Telstra regarding additional credit checks done when I was having my assessment reviewed (and hence had only applied for credit once). Took 8 months, two complaints, Ombudsman complaint and then a Veda investigation to resolve.
I can't imagine Citi would be any better.