Sure my contract in regards to these issues reads

 I have provided a security deposit of $_______, equal to two weeks fees at the time of enrollment to confirm a space within the program. I am aware that this deposit is non-refundable should I change my mind and not enroll in the program. I understand that the security deposit can be applied towards my end of service notice period provided I give proper written notice. If I do not give 10 business days written notice of my intent to withdrawal from the program I acknowledge that the security deposit will be kept in lieu of written notice and any outstanding fees due to changes in fee structure during enrollment or other fees will still be owed and are my responsibility to pay to the provider for services rendered.
 I understand that fees are due in advance of care by noon on Fridays as per my payment schedule. I acknowledge that a late payment fee will be charged if fees are not paid by the close of program on the Friday of my scheduled pay day.