Jetson Electric Folding Bike, no battery (Pls Read Description)

Newly used jetson bolt pro bought it 2 months ago used it for 1 full day and then took it home charged it and the battery stopped working on it and ive done tests and it has something to do with the lithium battery pack inside the bike i dont have time to fix, and im tryna get some money back from it As its an inconvenience.