Breach of contract - Late payment - Advice?

[Bluebird]

I had a problem with an agency once that said they only processed payments on the 19th of a month - my contract said they'd pay 21 days after reciept of invoice ???

Weird.

[TheFaQQer]

Suggest that you need to be paid more often,to limit your exposure. If they take it, it could mean that you get paid at the right time. OTOH, it could mean that instead of having to chase them once (or a few times) a month, you need to chase them every week for late payment.