Can someone please translate this letter?

Hi everyone,
I have been following the advice of other users here in regards to dealing with illegal lenders. I had a loan with Integrity Advance in the amount of $500 and have paid $750 to date. I have placed a ACH hard block on my bank account for Integrity and they have not been able to withdraw further funds from my account. I have files complaints with the BBB and California AG's office.
I first sent them a letter stating:
To whom it may concern:
After doing research regarding Internet payday loan laws in the State of California, I have found that your Internet payday loans are unlicensed.
I hereby revoke any and all ACH authorizations with your company from debiting any of my personal accounts, per Federal law, Regulation E Section 205.10 Preauthorized transfers. I have blocked any ACH/automated check drafts on my account ending in XXXX to protect my interest in this matter, per instructions from The CA Department of Finance. I also revoke any and all wage assignments I may or may not have signed with your company, I no longer authorize you, your company, or your affiliates to attach any part of my wages or contact my employer for your collection purposes. I have notified my employer about this matter so any attempts to do so on your part will be rejected.
I demand that any contact be made through US Postal mail or email only. I will need everything in writing to keep accurate records of all communication as per instruction from my Attorney General's Office. I prohibit you or your affiliates to contact me via telephone at my place of employment or my home telephone number. I also prohibit you from calling or contacting my references listed on my loan. Any threats made against me by your company will be documented and sent up to the Attorney General’s office, the State of California’s Department of Corporations, and the BBB. A copy of this letter has been forwarded to the CA State Attorney General to document these demands.
Due to the fact that Internet payday loans must be licensed in the state of CA to be a legal and binding contract, your company should not issue loans to CA residents at all. I am requesting that you send me your license number which enables you to offer loans to CA residents. As it stands, federal law supersedes anything written in your agreements.
The legal amount that could have been charged to my loan is the principal amount, even if your Internet pay day loan were legal anywhere in the U.S. I have paid the principle amount of my loan which was in the amount of $500, originating on August 24, 2009. Based on your lending status, I will have paid back what I borrowed against what you have already collected in finance charges to satisfy the principle balance. To date, I have paid Integrity Advance a total of $750 in finance charges on a $500 principle loan, which leaves $250 owed to me. My payment dates including the amounts paid are as follows:
8/24/2009 Initial deposit $500
9/11/2009 Payment $150
9/25/2009 Payment $150
10/9/2009 Payment $150
10/23/2009 Payment $150
11/6/2009 Payment $150
I am demanding a paid in full letter and refund of $250 to be mailed to my home address once this is received and processed.
I must also inform you that I will be filing complaints with the Better Business Bureau, the Federal Trade Commission, and the CA Attorney General's Office.
I expect a response from your company no later than 5 days from the above date regarding this matter. This response may only come via US Postal mail. Again, no telephone contact is permitted in any regard, to any of my references or friends, home number, or to my employers. I look forward to an amicable settlement of this issue.

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Should I go ahead and sign this settlement? Or is there something else I should do? They seem to agree upon refunding me my $250, I am just having a hard time reading the fine print of the settlement offer. Any assistance would be very helpful. Thank you in advance.
Arvin