Kandua and ******** service providers

I went on a website to look for someone who can assist with waterproofing. The guy came to my house and check all the damages. He then requested a deposit and i gave him a deposit but he never return. Kandua needs to do a thorough vetting for their people. This is creating a bad reputation for a business. I would never recommend someone to use the website because it it not legit and cannot be trusted