Capital One Credit Card Complaint

Capital One Credit card department,

APR or interest rate New Jersey

On -/-/-, I applied and received a Capital One credit card. When I applied I requested paperless statements. On my records the card had an 18-month no interest grace period. -/-/- the card charged interest. Upon calling, it came to my attention that the company could not find the original terms and did not provide them to me. The company agreed to waive the interest for that month and find and send the terms. I just received the letter - it has NO indication of the grace period and no mention of any terms. It looks like a regular account of their fees and other practices. I 'm at a loss as to how to proceed.