Replacement of battery with a more expensive hopeless battery.

I bought a gel battery to replace my alarm battery in January 2023, so that I would be prepared for load shedding. When the load shedding started a few weeks ago, the NEW GEL battery didn't last the 2 hours . It went completely off. The company says that due to load shedding, the battery warranty is not valid. It didn't even last 6 months.