... payments totaling up to 700$. Before all this happend i had lent him smaller amounts of money (ie 100$, 300$, 60$, 40$ etc) because he had claimed that he lost his wallet. we both agreed that after i lent him the last 2000$ that he owed me 4000$... i kept hassaling him for the money and told me that he would even pay 500$ ofinterest because i was annoying always asking for this money. last summer (july 2012) he paid me 2000$ and 2 months ago (february) paid me an additional 200$. that was the last payment i recieved...i have a letter signed by him saying that he owes me 2165 $(this was before he agreed to the 500$ of interest...and if your wondering, the extra 165$ was because he told me that i was so cheap because i kept asking him for the money, he told me to buy a pair of shoes with the additional 165$)..... after he paid me the first 2000$ i made him sign another contract stating that he owed me 2500$.... instead he decided to mock me and signed that he would pay me 5000$......about one month ago he attempted to pay me via paypal (5000$)..... i told him to email me the cofirmation email and number... he did..when i callled pay pal they told me that the confirmation number was invalid and the payment was fake... he never made it and made up a whole confirmation email from paypal.... what can i do??

i feel like theres nothing i can do because the amounts vary so much and my story is so confusing. I personally think that he signed those papers with outragous amounts of money on purpose so my story looks confusing and not serious... i dont even know how to present this case in front of a judge!
please someone help me!!