How the instrument was lost

I did a drum less at this parents home I took out the stick bag the parent said they saw me take it out with me and put it in the car. I went straight to a dj booking at Simmons Bar Greek Street in Soho that was from 7pm til 12am after that I went to Ronnie Scotts, when i got home at roughly 2am, when I was unloading the car that’s when I realised i could not find the stick bag, i asked the parent, called the venues I was at none of them said they can find it.