2 Left Hands

I purchased a boxing bag and gloves set for my son for Christmas. On Christmas Day he opened it, disappointed to find it had 2 left hand gloves, so he couldn't box properly (we wrapped his hands so he could play without the gloves). I emailed Toys R Us on Christmas Day to request a right hand glove to be sent to me, since this is Toys R Us fault, it was packed incorrectly. I received no feedback, and sent another email 2nd Jan 2025. Only on the 8th Jan did I finally get a response, telling me I need to take the entire set back IN ITS ORIGINAL PACKAGING??? (It was opened as it was a Christmas present), and with the slip (again, it was a Christmas present, I didn't keep the slip)! I offered to pay for the replacement glove since I don't have the slip or packaging. Again no feedack. I followed up again 13th Jan. 15th Jan I received an email stating it cannot be done, and I must pay for collection and courier of the defective set!? Why must I pay for this? It was packed incorrectly, yet I must waste my fuel bringing it back, or pay out of my own pocket to have it collected? I am really disappointed in this lack of service, and it has left a terribly sour taste in my mouth. I get angry whenever I see a Toys R Us advert now, and it is such a shame as I was a regular customer since my son loves toys. I expected more. Toys R Us is supposed to be about bringing children joy - not disapointed due to being unable to use a Christmas present because Toys R Us packed the wrong glove!