Find an independent broker to serve you with adequate coverage.
Be patient and diligent as you shop. My broker, a local independent, got my coverage arranged with MedJames Insurance. The coverage limit is $300K per incident, $600K aggregate per year. Premium cost will be based on the equipment you include in your policy. If you need to make payments you will probably have to pay 1/3 of it to start and the remainder on a payment schedule for a small fee. Do not let your payment be late...that fee is high. If you have a payroll, they may also insist that your worker's comp insurance is paid to date. This is a large expense for our industry but it goes with the territory of danger, risk and service. I have had liability since 2007 and never had to use the policy thank God. Good luck!