Citibank Credit Card Complaint

Citibank Credit card department,

APR or interest rate Massachusetts

-/-/- or -/-/2016 I opened a new account with Citi through - -, it is a double cash card. I opened this account because they offered a 0 % interest on purchases and balance transfers for 18 months. I recently looked at my statements and noticed that they charged me interest. So I messaged them to inquire why they were charging me interest, and they told me the 0 % offer was only on transfers and not on purchases, that the 0 % offer for purchases ended -/-/2016. I asked how the offer could expire on the day I applied and was approved for the card, ( give or take a few days ) and they kept repeating that the offer was for balance transfers. I know they are being dishonest, I NEVER open cards with an interest rate on purchases, especially one as high as they are charging me, 19.24 %. It would n't even make sense to open a card with interest on purchases, as I had many offers with 0 % I did my homework, I looked at lots of cards, and I chose this one because they offered the longest 0 % rate on purchases and transfers. I feel like they are bait and switching customers and I think it is illegal to use such deceptive credit practices.