Company resfuses to pay for completed survey

I am a panel member of this research company, Market Reader Pro. A few months ago I was sent an email by this company and was asked to complete a three part survey on the topic of men's razors. Each of the surveys I was sent was 15 minutes in length. I fully completed all three surveys that the company sent me via email. Upon completion of the three surveys I was to be compensated $15 payable via Paypal. Several weeks went by and I did not receive my compensation. I emailed Market Reader Pro several times and all of my emails were ignored. I then filed a complaint with the BBB and Market Reader Pro did not respond to my complaint. I have yet to be paid the compensation that Market Read Pro promised they would pay. This company currently has an "F" rating with the BBB. If you are, or considering becoming, a panel member of this research company I would suggest that you do not waste your time completing surveys for this company as they will not pay you as promised.