Citi Double Cash credit card gives you 2 % cash reward ( 1 % when you make any purchases and another 1 % when you pay the balance. ) I bought a phone from XXXX XXXX using XXXX credit card. When I returned the phone, an XXXX staff asked me to give him a card so he can put the refund money on it. Because of my confusion of having too many cards, I gave him my Citi Double Cash card. 
When the {$1000.00} refund transaction was clear, Citi thought that it was a refund from my using their credit card, so they deducted {$4.00} from my cash reward balance instead of giving me {$9.00} more ( I spent {$540.00} on purchases and paid {$350.00} I owed them. ) Thus, my total loss was around {$13.00}. 
I called Citi and explained, a guy ( I ca n't recall his name ) said he did a dispute, and I could expect to receive {$15.00} back in XXXX5 business days. 
Today XXXX/XXXX/16, I called back asking why I have not seen the {$15.00}. Another guy said he was not able to find any disputes on my account, which means the first guy lied to me. After talking to his supervisor, this guy said they refused to give me the money. 
I think this is absolutely wrong. The amount of {$1000.00} was not from Citibank. I did not use Citibank 's credit money to make the purchase. It was supposed to be considered as 'payment ', not 'refund '. Thus, they had no rights to deduct anything from my cash back reward. Please help me work out a solution with them. 
Thank you. 
