I suspect humans are no longer involved in many such things. I still get mail (and sometimes phone calls) for my mother who deceased in 1987. I'd had her mail forwarded to me so I could handle her debts. I get mail offering assisted living quarters for her as well as other senior opportunities. It's been 32 years, 'fer cryin' out loud'. My father deceased over 2 years ago and I had his mail forwarded to me. He was a generous person who gave to quite a number of charities. His reward was to be hounded by these charities for more money. I inherited his mail. Any such mail which has an SASE reply envelope gets a message that he is gone and to please stop asking for more money. Some that don't send an SASE have had their solicitations returned (at my expense) with a request for his removal from their mailing lists. Very few have honored this and I still receive 20 or more pieces of such mail for him every week. I can only guess that this is because the actual charity doesn't handle the solicitations but they come from 3rd party professionals who are probably paid whether donations are sent or not. I think this is largely due to lack of human attention. I suspect no human may be reviewing your account and perhaps it would cost them more to hire someone to track you down than to just let this go. The continuing offers you get probably come from a 3rd party as well.
While I, allegedly, have a nearly nine year old debt, with a cable television monopoly, I have to wonder WHY my account has, NEVER, been sent to a collection agency.
Also, IF I, allegedly, owe the cable monopoly money, then WHY does the monopoly continue to send me service offers?
Does this make sense, to anyone?