Innovation Group refusal to authorize warranty claim

I am highly disappointed at Innovation Group on how they handle my warranty claim. I bought my vehicle from BMW Fourways and all my services / repairs done via the same dealership since 2018. I sent my vehicle in on the 25th for diagnosis when I got a warning light to top up coolant. Innovation Group declined my claim and they cannot confirm why they declined and they cannot confirm the detail report that was shared to them. The service advisor called them withregards to my vehicle repairs that had an issue with the coolant/ coolant system, which means it will require a connector pipe behind the cylinder head. I'm Looking at the reviews on this platform I can see now that innovation group clearly has a track record of declines, you have a lot of clients that are dissatisfied. Please assist urgently.