Adidas - MRP was but billed for cheated

Hello , i purchased a shoe from Adidas store from express Avenue Mall Adidas showroom , initially when the store men showed me the shoes , i asked him the price for the shoes , he said for *****/- but while billing he said it's for *****/-
I asked him about the price again , then he replied system showing *****/- , later he said by mistakely he said *****/- , then i thought he might have said me wrongly and accepted his words n bought the shoes for *****/-
Then i came to home n checked the shoes , but mrp in the box was scratched , then i checked in Adidas store , price for the same shoes was *****/- only , Mr basha cheated us by increasing the price while billing, i need the compensation against this n my loss top , we jus trust the brand n blindly pay as the store person said the price , shoes was not in discount too , paid full price then too got cheated , i didn't expect this from such a good brand store , pls look into the issue n revert as soon as possible, i will go tho store tomorrow n fight for this with the video recording
Bill no ******T**SC*****
*/**/****
**.** pm
Cashier I'd -S****
Sales men person name altaf basha
Adidas comfy shoemakers p Ltd