Bravecto kills dogs!

My Schnauzer got extremely ill after taking bravecto. He was suffering from pancreatitis and had been in the animal hospital for more than two week on a drip. Due to the bravecto, his liver had completely stoped working. The vet did an autopsy after he passed and determined that his liver had 0% functionality. Who can I contact in regards to sue the Bravecto company, the cost for all the treatment is close to R20 000 and I want bravecto to pay or have the product completely taken off the market.