CVS review: Terrible, rude manager and coupons did not apply - even though receipt shows it!

First - we had to wait for someone to help us with passport photos. When another cashier finally came to the registers, she helped us after she got the line down. As she was finishing up - all she had to do was hand us the last photos, her manager, LOU, came to her and told her to stop what she was doing and go back to stocking the shelves. She just left! She apologized - it wasn't her fault - and left. Now we're standing there waiting for the one cashier (who didn't move very fast). Of course, the line kept getting longer for her. She finally called someone up to help and they had to go in the back and get her more cash. We asked if she could take a second to hand us our pictures but she said sorry, we'll have to wait. After more minutes, she came over and handed us our pictures. In the meantime, she had called up more help and guess what - it was the original girl that helped us!
Now we cash out and I didn't understand why the cost was so high when I used over $3 in coupons. I just added up my receipt and even though the coupons are on there as being Applied, the amounts didn't come off the total. We were taxed on the entire total and now I have no coupons! This to me is fraud.
This is the CVS on Main St., Colchester, CT 06415