Bad service

Had a inceddint todat at Malmesbury Checkers i bought Huggies the one which on a Special yesterday the size was small so i exhange it but they said **** you they dont exchange so i was so frustrated checkerz is the worse shop ever with there old food what must i do with R700 of kibies ( U really suck checkes malmesbury with the manager. Which help me today

O stars