Reply to @hanumancraft: You will need to support yourself to raise your rating. You will need to gain more sales with excellent reviews and your rating will slowly go up. No one else can really help you with this. Promote your gigs on social media, seek out buyer requests and provide your clients with the best possible service and a guarantee of satisfaction or mutual cancellation.
Once you get your rating past 95% you will have more ability to dictate how you want to handle customers but in the meantime you may have to go above and beyond for some time.