I submitted a claim the day I had an accident, 12 September 2022, to cut the story short I only got my car back on Monday 6th November from their service provider (international panel beaters) with a dead battery

I submitted a claim the day I had an accident, 12 September 2022, to cut the story short I only got my car back on Monday 6th November from their service provider (international panel beaters) with a dead battery. I phoned the panel beater and related the battery issue. He said to me it's because it had reached its life span, meanwhile my car has been stationery for almost 2 months, I argued that but he insisted. He then offered to get me a new battery where I will pay 50percent of the cost and he will cover the rest. We agreed telephonically now he changes the agreement and sys we agreed that I would pay 2 installments of 50percent and the other half later.