<prompt> Human: Why is it that the equipment or the last and final bill is such a recurring problem? Why is it that the companies fail to finalize these accounts?I am getting a notice on a five year old cable account not paid. I was there, I surrendered the equipment, I paid the final balance, I got a receipt and just a year ago, I threw away said receipt. I thought while doing it I dont need this anymore! Now it isobviously in collections, and when I verbally denied this as being a valdid debt over the phone they launched their investigation. What they sent me was a lame letter head statement that basically said balance minus equipment return equals 223. How would you proceed on this?  <response>: Their business model relies on steady, predictable income. Making it easy to close account means they would be like every other company, and the value of the shares of the cable companies would drop. 