How to Negotiate with your Creditors
For starters, make sure you have done genuine research - not just research you can use to throw in their faces - if you are looking, for example, for someone with a lower interest rate that you can use to refinance the loan, genuinely look for better companies so that not only can you use them as an example, but you can also actually switch to them if you don't get what you are asking for.

On hand you always want to have:
• All of your loan information
• Your Credit Score
• A history of your credit payments
• What other banks are likely to offer you
• Your other debt payments that you are currently paying off
• The exact reason you want to refinance or change the loan terms.

Make sure you have a good reason for wanting to change the loan terms. If it is because you do not have the money to pay them, then explain why. If it is because you want to have an easier payment plan, make sure you explain why. And be honest - trying to renegotiate loans that have no reason to be renegotiated is likely to be a futile effort.

When you call your lender, they will send you to one of their employees. Explain the situation clearly, make sure you tell them with honestly what you are looking for (Lower interest rate? Longer loan term?) and why.

Finally, it is quite often that they will not listen to your first try. You may need to contact them more than once and try again and again, especially if you are changing the loan terms for a reason that seems more optional. If you have made all of your payments and your credit score has not changed much, it is not uncommon for the lending companies to believe that you are going to keep making payments anyway and that they don't need to change anything.