Paper mail costs maybe 50 cents for a regular letter. If &quot;may not be read&quot; is a concern, send it certified. That costs all of $4. Too expensive? This is a company that charges $10&#x2F;month to rent a $50 cable modem. They get none of my sympathy when it comes to cost. If negative sympathy were physically possible, I&#x27;d give them that.<p>This problem you describe is <i>solved</i>. Businesses all over the place manage to figure out how to communicate with their customers, but you want me to believe that Comcast is in some impossible situation where their only choice is to corrupt the data they&#x27;re transmitting?<p>If you need to get in touch with your customers, then you can:<p>1. E-mail.<p>2. Call.<p>3. Send a letter.<p>4. Send a certified letter.<p>And if none of that works, disconnect the service since there&#x27;s obviously nobody living there anymore. If the $4 for a certified letter breaks the bank, then add a clause to your service contract that says the customer has to pay it back if it ever gets to that point.<p>Not every problem needs to be solved with computers over the internet.