Dollar General complaint: Second dollar general to lose me as a customer

I put 8 6pk. bottles of Pepsi and two, 2 liter bottles of 7up in my cart. The sign said two, 2 liters of 7up, ginger ale and Dr pepper was 2 $2.00 and the Pepsi’s said 4- 6pk bottles 4$11.00. There were about 4 small signs and 2 bigger signs for the pepsi. When I went to check out the 7ups rang up reg price and I had to show them the sign before they fixed it at 2$2.00. The total bill was off about $7 so I asked what Pepsi was showing because sign said 4 $11 and he said its ringing up reg price, so I showed sign again and he said sale was over on Sept 5, and it was now Sept 9 and they just hadn’t took the signs down. You are suppose to get it for that price if that’s what the sign says. After about 20 minutes of finding assistant manager and explaining to her and her calling a manager she finally comes back and said she couldn’t let me have them for that price that they were now 4$12. So instead of letting me have 8 6pk for $2 less than sale and matching prIce on sign, she has lost me as a Customer at that store. I had a similar problem with another, over pepsi. I went to buy 12 6 pks at a dollar general last year. They were 4$10 and you had to buy 4, which like I said, I wanted 12. They only had 26pks and said I had to pay reg price because I wasn’t buying 4. They only had 2, so how could I buy 4. I didnt buy ANY. I called corporate office and they agreed that I should have got sale price under circumstances. But that was too late, I won’t go back to either stores. With gas still high, and the fact that I wasted time waiting for an answer and didn’t get what was advertised, and I would have to make another trip if they said I could come back to get for that price, I think they should give them to me free, all 8 6 pks. That would be the only way I would go back to that store again, if they were free.