zocdoc warranty/guarantee issues

I signed up with Zocdoc in Mid- November 2015 based on the information the representative (who apparently has left the company) had given to me verbally. The representative mislead and coerced me to sign the contract promising 100’s of new patients annually from the Zocdoc site, as well as a huge improvement in search engine optimization and my online reputation management. It’s been more than three months since I have signed up and paid a yearly contract of $ 3000.00 (which they insisted to be paid upfront and refused to do a monthly contract with me.) I have not received even one new patient appointment from this site since I started the contract with them more than 100 days ago. I did contact them after a month and expressed my concern but was told that I should give it at least another month for this to work. I had contacted them after the 2nd month and was told to wait again, After the 3rd months, I contacted them again and complained and they are telling me I have to wait until the end of the year and I was told that even by the end of the year, there is not guarantees of anything . Had the sale representative told me what they are telling me now (wait for a year and still there is no guarantee that a patient would make an appointment from zocdoc) I would not have signed this contract and paid $3000.00 to them. I have called and requested to get a refund but they have refused to do so .I just want to clarify that I do not necessarily blame the sales person who enticed me to buy into this contract as he was just an individual who had to follow the policies of his company. As a matter of fact, I was approached on numerous times before this by other sale . I would like to get a full refund.