Wal Mart 15.35 should have been 9.35

I did pretty good at Wal Mart yesterday. Here is what I bought.

12 Smart taste pasta 1.50 each had 1.00 coupons
12 Green Giant steamers 1.08 each had 1.00 coupons
2 Muir Glen fire roasted tomatoes 1.24 each had 1.00 coupons
4 Goody ouchless elastic bands 2.28 each had 2.00 coupons
1 wheat bread 1.34
1 dz eggs 1.52
2 farmland bacon 2.50 each had 2.00 on 2 coupon
subtotal before tax 41.42
total after coupons 11.42
tax3.93
total paid $15.35
total savings $30.00
When I add this up its 36.00 in coupons and he only gave me credit for 30.00, I was watching him too. Man, that's annoying. I could have paid 6.00 less. I have no way to prove it though. It makes ya mad cause they will get the whole 36.00. grrrr.