Petsmart had a large sign at Cesar dog food flats. It said buy 10 and get 3 free. I took 26 cans to the register. I told the clerk about the sign and she said she knew. I got home and found out I was charged for all 26 flats instead of 20. I called them and asked about it. They said because they were charging only 70 cents per flat instead of the regular price of 75 cents per flat, that constituted a savings of three free flats. Where did they learn their math? 10 time 75 cents is $7.50, 10 times 70 cents is $7.00. That is a savings of 50 cents which does not constituent even one free flat, let alone 3. I will never shop in Petsmart again and I will be sure to tell all my friends about your false advertising.