I was let go from a job within the 90 day probation period. It was a high level job that required a relocation of 300+ miles which the company paid for. The job is quite different from the job description and information given during 5 interviews. The termination stated reasons of performance that were not consistent with my contract. The company agreed to give me 3 month's severance for my trouble and I agreed, signed the paperwork and the attorney was to forward me the termination contract. Later that day, I was told that the circumstances had changed as I had put a $200 check in petty cash for $200 the day before. I didn't have time to replace the money before being let go. They are saying that due to this, I am only now being offered $10,000, not the $22,000 they had agreed. I feel I've done nothing wrong and signed the paperwork based on the original agreement. They've given me a deadline to sign for the $10,000 agreement or it will no longer be offered. What should I do?