I have been calling different numbers for Virseker Insurance ( Mid Rand, Cape Town and more) All no starting with 086 only give me' this number do not exist' I need to contact them to register a claim, but no reaction, not even from 'we call you'

I have been calling different numbers for Virseker Insurance ( Mid Rand, Cape Town and more) All no starting with 086 only give me' this number do not exist' I need to contact them to register a claim, but no reaction, not even from 'we call you'. Where do I get contact detail that actualy work?