Jamming my doorbell camera

Hi can anyone help, my neighbour is jamming my battery doorbell camera. I hear them tinkering at the opposite side of my wall, then hear them leaving, open the app and NOTHING of them leaving. I’ve noticed them making gestures of gratifications of jamming my camera on their return, but never seeing them leaving. Their up to all sorts and they obviously don’t want their faces to be seen, as they put up their hoods. Help please