Discovery is a *****, Becareful with their Vehicle insurance

I bought a 500K Car in December and paid 2,1k for my Discovery Insure Policy from December till March, I got hijacked in my house driveway in March and when I claimed from discovery they declined my Claim simply because I did not disclose that a had a "Household Contents" insurance in 2012, which had nothing to do with Vehicle Insurance, Discovery insure is a *****, and a *********, how do you connect a 5 year old household contents insurance with Vehicle insurance, they declined to honour the claim because they realised that it was a new and an expensive car , I m disappointed at Discovery and I wont rest till I get my issue resolved, As much as they advertise a lot on TV it is because they know that they are a flop and you robbing a customer who did not even skip his premiums, I sent an email to the Complaints manager on the 20th of April 2018 and till today they decided not to respond because that is the way discovery treats its customers, Very bad and poor service from discovery, its the worst insurance company ever, NXaaaaaaa. Guess what after they had declined my claim they said that they will treat the policy as if it never happened , yet they enjoyed the fruits of my premiums for 4 months but when they have to honour the claim they decide to reverse the policy which is pure nonsense.