MR Price Sizes are Wrong

Mr Price needs to check their sizes. I am a comfortable 36 pants and everytime i go to Mr Price I have to get a 38 or even a 40. All the other stores 36's fit but only Mr Price doesnt. Also the bra sizes... I'm a 36C but when i bought 2 bra's this weekend its more like a 34B... Doesnt fit either. It's frustrating because i have to keep returning the clothing!