Citibank — not investigating a complaint reg fraudulent international transaction on my citicard [protected]

Address:

AKDENIZPETURISTANBULTR

On 09/08 one istanbul firm debited my card for three trtansactions of 9207/89, 9415/44 and 9245/63. This was not incurred by me at all for i never used citicard for any international transaction till now. I reported this to citicards, chennai. They replied me by their letter[protected]/crd/cou dated 24th august 2017. They replied stating they have raised a dispute and that they will revert to me in 45/60 working days. Though they have credited back my accoun t with the above 3 sums, tilldate i. E. Even after 2 years they have not reverted if they have really inmvestigated and the outcome.in other words they are keeoping me in dark reg the outcome of their investigation. How can i rely on citicards if they are lacking prooper and serious attention to such things like this. Was their reply an eye-wash and formality to satisfy me?
Their silence till now to revert to me only makes me suspect if someone in citicards has been involved in this fraud trnsactions. I have every right to think so in the absence of proper investigation and report to me
Please let me know now atleast, if not let me take up the matter weith ombudsman and also report to cybercrime so that atgleast to them you will answer
Thanks