Discover Credit Card Complaint

Discover Credit card department,

Rewards Kentucky

Discover Card advertised and has been running a promotion whereby the account holder will receive 10 % bonus points/miles for purchased up to $10000.00 total made using -. After the promotion began Discover changed the terms to dis-allow gift card purchases to count towards the promotion. They have arbitrarily declined me the bonus multiple times stating they believe I had purchased gift cards. They stated that if I did not purchase gift cards I should email them scans of my receipts. This shows that they are erroneously and without merit denying claims to the bonus with out any actual information or proof. They are also asking me for receipts, which I do not have because I did not keep them due to the fact that the terms of the promo do not mention the need to keep receipts. Discover is being very deceptive luring me and others in to a promotion and the using bait and switch tactics to not have to pay out.