You said it looks like your handwriting. Let's presume it is your handwriting. This document states that the fee paid for these services--and I will get to those in a minute--was $250,000. The date on this document is February 4, 2000, which is long after the last payment you made to Mr. Mulroney, which you've said was December 8, 1994.
On February 25th, 2008. See this statement in context.