Chasing does not really "repair" damaged threads, it attempts to push the distorted metal back into shape but there are limits to how well this works. I would suspect that if you have had it done once and it has got cross-threaded again that trying it again would likely be futile. Are you trring to reinstall the BB which went in cross-threaded? If so, ITS threads may be damaged too and might not work even with brand new perfect threads.
If you have a square taper bottom bracket you could fit a threadless one like this: Grand Cru Threadless Bottom Bracket-107mm - Bottom Brackets - Components I do not know if there are threadless options for other BB standards, others may.