I sent a billing error notice because I was out of the country for about a year without statements, but used a 3rd party to pay them on time. When I returned, the amount they said I owed surprised me. So, in accordance with their rules, I sent the letter to the dispute office. They ignored me, so I sent another reminder. ignored again. So, since I had no basis for a true amount owed, i sent the A&S letter and clearly marked it on the check as such. Now, when I look at the TN law about this, they say that they have 90 days to return a check if they aren't in agreement, but could send a 1099 for the balance. OK i can live with that. They have ignored federal law all along the way, so this doesn't surprise me. I also don't see any language that says I can't do an A&S in the contract. I think the law is on my side, but now we are being sued. What good is a law if they can violate it at will?