This company is just awful. My father passed away...

This company is just awful. My father passed away from COVID 6 months ago and they continue to send me collection notices even after I've refused the mail and have written "deceased" on the envelopes. I am not responsible for my father's debt and the minimal amount of life insurance he had, I paid as many medical bills as I could. I can understand this company wants money owed for a debt, but I cannot give you what I don't have. Continually bothering me is not going to pay off the debt so please stop. Thank you for the "canned" reply, but I don't want contact from your agency, nor will I contact ANYONE from your agency. This is not a matter for me to resolve.