How can I do a 0 or less star rating?

Working with this company did not go well for us. They refuse to honor the contract they drew up and we signed with them and paid for the services up front. Even though the BBB has this company listed as A+, they are not accredited and all I can say is read the complaints listed there. Mine is the 8/2/2016 compliant. http://www.bbb.org/central-california-inland-empire/business-reviews/paralegals/the-attorney-alternative-in-fresno-ca-89049740