Unrealistic terms and conditions

Went into Ackermans to return pants refused by my son. On arrival the cashier requested the same card that did the purchase in order for them to refund the money. Now this to me was a bit off as its not on thier refund policy written on their receipts. What if someone bought goods for me and has their own card in a different province? They said they could only assist with an exchange for the amount rendered....