There may be instances where discussing your situation over a public forum could potentially compromise your interests. On these occasions we will contact you directly via email in order to answer your inquiry in a confidential manner.
Go to your post office and ask the clerk for a receipt that proves the letter was mailed. Keep this receipt along with copies of your letter and any correspondence you’ve received from the collector. If you ever have to appear in court, you can show the judge that you did respond to their requests. You generally receive the benefit of the doubt and the burden of proof is put back on the collectors back.