Sorry to hear this. I'm a former freelancer, so I know how tricky these disputes can be. I've built a tool called Juro that offers free automated contracts and e-signing to help avoid situations just like this - www.juro.io.
Hi there. You could try a tool I built called Juro (www.juro.io) - automated contracts and e-signing for freelancers. It's free to use and should save you the hassle of Word templates and having to sign by hand.