If your are looking for advice on what I would do PERSONALLY if this happened to me ... I guess I am petty as well and unless I REALLY needed the income more than my pride I would not allow someone back into my program who did not value me as a person to respect my income specially after I had given BIRTH cause in any other industry a mat leave is a 'protected right' yet we are expected to give birth and people bitch if we take more than a couple weeks off - I have a provider friend whose client actually expected them to work the MONDAY after she gave birth on the FRIDAY ... seriously THREE DAYS???

IMO l 'values' are hard to change in others unless they a re TRULY motived however if I NEEDED to income more than my pride I would be steps in place to prevent them from 'disrespecting or devaluing me again' by properly MOTIVATING them to change A clear contract that payment is in advance on the Friday before for the upcoming week, two weeks or month depending on how you prefer to be paid PLUS there will be a late fee payment if they have to be 'reminded' just like in any other business and the contract will be 'suspended' if payment is not made by the Monday morning that care if to be provided and the contract will be TERMINATED if there is more than X issues around payment - you decide how many 'chances' you want to give them to forget to pay you, I would also address the lack of notice given as indicate above with a security deposit and written notice or forfeiting the deposit in lieu of proper notice!

As I said I always HOPE for the best in people and plan for the worst .... these above are all things I already do to 'protect' myself from those who might not value me and try to negative effect my income