Les Schwab over charge for tires monroe, Washington

in dec. o9 hade a front end alignment and two new 13 inch tires installed. beginning of feb. 2010 went in for the other to new tires was told they did not have exact match of my front tires.was told they were a few dollars cheaper i said ok when i got the bill it about the same as the first time i came in.the salesman told me they were the same price as the first time.he then looked at my reciept found they wher twice as much but noted i did get free beef (small box little bottle mustard -jerky-salami)i replied i paid 60 dollars for that free beef