Is my non compete void if I am asked to do something illegal?

Is my noncompete void if I was asked to be involved in an illegal act in my position. I was asked to sign papers and complete documents that were illegal and I refused. Since then I left a well paying job, with a lower salary, to go to another company out of my mileage range stated in the contract and am now being told by them that I cannot contact any clients within the their 30 mile range, not mine. Even if the legal section is not an issue, is this legal for them to impose, even though I am working out of my stated range of the employer? It says nothing about contacting the clients in the agreement except for company lists, which I am not using in any way. Can they prevent me from cold calling any company in their range even though I am working for a company who is not in their 30 mile range? You should have a way for us to email our contracts a it would help with your answers, thanks.