DCP wants deposit refunded?!?!

[gravy_train]

In my policies and procedures it says:
"If you decide to terminate care, I require written notice four weeks in advance of your termination date. If your termination breeches the terms and dates outlined in your contract, your deposit will not be refunded unless otherwise discussed."

And:
"I require a non-refundable four week deposit at the time of registration, which will be applied to your last four weeks of care as outlined in our contract."

Do you think that is clear enough to cover my butt should they try to sue me?? OMG now I'm super nervous about this!