Galant's Appliance doesnt deliver on 6 month warranty

I purchased a dishwasher from Galant's Appliances, which came with a 6 month warranty. The dishwasher broke down before the 6 months was up and now he doesnt wamnt to replace or fix the dishwasher. His blocked me from his whatsapp so i cannot get hold of him. He gets clients to purchase electronics from him wioth a promise that they have 6 month warranty but when they break down, he doesnt deliver on that promise. Dont purchase any electronics from this company.