CVS review: coupons

CVS has a ECB deal on Atkins Bars.. buy 2 and get 5.00 ECB and pay 16.00 for 2. The cashier told me I would not get the Atkins bars at 2/16.00 unless they were the same flavor... which limited me to 1 flavor. Have never heard of this before on ECB and the circular did not mention it either. Also, she would not accept the CVS coupon for 50 cents off Gold Emblem candy and also told me I had reached my limit on the 1.00 and 2.00 off coupons I had printed online for the Gold Emblem products.. I had 3 different coupons but was told there is a limit of 2. She also kept the coupon and this has happened several times at same CVS store. Coupons are the same as money and I feel robbed.