Unpaid claim

my car was ****** which has been insured by ABSA IDIRECT for full six years without a single claim. Absa has declined to pay the claim claiming that the car immobilizer was not working. This is not the 1st time I've heard about them refusing to pay a claim. It seems like it is their reputation. I am writing this to warn other clients to rather consider other insurance companies before they find themselves in the same position. I am however not letting them go away with this. I ma going to take the case up with the ombudsman or court if I have to.