Citibank — citibank is no more secure bank and they do charge us without informing us (mcupos transactions)

Address:

Pune, Maharashtra, 411041

Recently (1st of Oct 18) CITI Bank charged me for some transactions that I did back in Feb and March 18 using my debit card at one of the petroleum merchant (I usually fill bike/car gas here).

When I contacted Merchant they said, "This is not done by them". So real issue here is the bank like CITI is doing Fraud here under the subject MCUPOS subject.

I contacted CITI support 3 to 4 times.

1st time they said if Merchant has no tie-up with us then we do charge for card transaction
2nd time they said this is late settlement done by Merchant and this is not from our side (This put me in worry if the merchant can do this then Card Swap is risky, they can take any amount that they want)
3rd time also they said they investigated from their side and Merchant has done this.

I contacted Merchant three times and he said we never do this.

I google around MCUPOS subject line and found that there are many cases happen in past and all are fraud transaction done by CITI Bank (Worlds largest networking bank).

I have attached the screenshot for those transactions and yes it is suspicious but it is performed by the Bank only.
So sad. :( :( :(