Postnet Fox Street Johannesburg cbd refusing to refund money for the parcel lost

I’m not happy about Postnet Fox Street Johannesburg cbd they lost my parcel and they don’t want to accept the handwritten slip for the item they lost for refunding my money demanding an A4 size printed slip...they lost my parcel due to aramex truck being bombed on the trucks strike now I should suffer... I need my parcel or money equal to cost of my parcel...