Spotlight Cam Battery not charging with solar panel

that’s what they tell you ever time you call oh clean the panle and the port that’s hog wash mine is new and they changed it told me it was the panel monde you i had already tested it with a bolt meter and it was pumping out the 5 volts it gives them they change the camera and that where i am at instal it sat and already one of the bats is at 80% i will give it until friday before i call them and demand a refund