Freelance lawyer on nwnf basis

I am in need of a lawyer to help me fight my case.

I am a freelance webdesigner (also listed on this site) and have a customer that has backed out of a signed contract.

I have completed all my contractual obligations and can easily refute all the reasons they have given as to why the job is being taken away. The contract is worth £4312 of which I have been paid only £735.

I can supply copies of all documents, emails and copies of voicemail recordings where they say they are extremely happy with the work done so far.

Can I persue this? Is it something you can help me fight on a no win no fee basis? I dont have any money as everything was riding on this site paying out.

Thanks

Ian