Dollar General review: not accepting coupons and rude

Clearly states on their website they accept coupons (including, but not limited to, newspapers, magazines, print-at-home (internet), direct mail, product packaging, and in-store coupon boxes). I was told while shopping that would not accept coupons printed from a home computer. I put those coupons up and was just going to use ones I cut from newspapers and my home printed DG coupons (which I was told was okay to use) . 7 out of 9 of my coupons would not be accepted at checkout and these were ones cut from paper and Dollar General coupons - ALL LEGIT. After cashier tried many times, the manager was called. I was given many, many excuses and even told that it would not take my coupons because it took the DG $5 off $25. That has absolutely nothing to do with my personal coupons. Coupons are like money. The store gets the money for the coupons plus a handling fee for coupons. After I went through much humiliation, I told them to just put the stuff back that I had coupons for. My original receipt was $34. When cashier rang it up second time, I owed 29.49. I returned $6 paper towels, $4 Pledge, $3 Windex and $3 lotion. I knew this was not correct and tried to tell cashier something was wrong, but was told that was what it came to. I told them to forget it, I would go outside and check it. It was obvious they were not listening to anyting I was saying. I was truly not treated like a customer, but more like someone trying to get something over on them or something. I went back to manager to show him I was still charged for some of the things I did not get. He kept beating around still talking about the coupons. He finally gave in and gave me back $7.45 - and this was after him telling one of the cashiers that they needed to go back and get the items because "she wants her money back for the Pledge and Windex." It doesn't take a rocket scientist to know the amt was wrong and they still acted as if I was wrong. Sorry Dollar General, but you just lost a BIG CUSTOMER and all my friends also.