I did not authorize a transaction, and I want to dispute the transaction.


First, please inquire about the transaction from all folks with whom you shared the card number. Also, we recommend you to not share your card details with anyone.


Second, was there a transaction in the past with the same merchant ? If yes, does this merchant charge for their services on monthly basis ?


Thirdly, please follow the steps mentioned in the below link to lock your card and block the merchant.

https://karboncard.freshdesk.com/support/solutions/articles/81000393187


After doing that, kindly send an email with below details to support@karboncard.com .

Merchant Name

Transaction Date

Transaction Amount

Card Holder Name

Card Type