Where to hire person to finish my website?

I appreciate the themes but have found that none are capable of doing what I need them to do. I am not a computer programmer – far from it – and rather than waste any more of my time and money on purchasing more themes only to find myself in the same familiar deadend, I thought perhaps there are resources available where I can simply pay somebody to fix the given theme I am working with to enable it to do the things I need. Any suggestions? Thanks.

Dana