Service providers without ratings have most likely just joined Kaodim. Though they might not have ratings yet, that does not mean they are not quality service providers. In fact, these service providers are incentivised to do a quality job to ensure that they get a brilliant first rating, so help them build their reputation and win future projects.
A good, quality service provider should have a portfolio of previous work. Service providers can upload photos of past projects, qualifications and a description of their services on their profile. We recommend that you review their profiles for this information and ask them for customer references if needed.