Varinder -376009

I purchased the C1447M James Bond 007 Scalextric Set for my son as a Christmas present, and it seems like one of the controllers doesn’t work. We have swapped the cars around and also switched the controller to the different port and we still have this issue. My son is very upset that he is unable to play with his gift properly. Can anyone please advise on what I’m doing wrong? thabk you.