Dollar General review: Coupon issues

Every time I go into your Dollar General on Divinity Street in Bristol, there is a major issue with coupons. Today took the cake as far as i'm concerned! I put digital coupons on my card, and they hardly ever come off. One of the managers told the cashier I was right about the price and she made the manager go get the sign. He said the item was on sale till today. She made me put my phone number in again, I got so aggravated I took the items and told her to keep them. She had a huge line... Who cares I guess... Even your manager told her that was the right price. Left the store, now to make matters worse I get home and my husband said print out the coupons (I usually do, because they never come off) and we'll go to another dollar general. When I went to do that the incompetent cashier must have left my information on for the next customer and they used my coupons and my $5 off of $25 that my husband wanted to use today for things he wanted! Really? I won't bother putting in coupons anymore or shopping at a store that can't get their act together.