We have Time Warner in Ohio. Luckily, I am able to be home to wait for these turkeys and it does not involve losing work pay, etc. Believe me, I keep track of the time. Don't know if it is universal
Time Warner policy, but here they have an on time guarantee. Around the holidays, I got $60 off our bill, since we had 3 appointments scheduled, and the guys never showed. As soon as the appointment window was over (I usually try to allow an extra 5-10 minutes before I call) I was on the phone. They gave us a $20 credit for each missed appointment. If they are late, you get a credit - but only if you call. I also keep after them for credits for interrupted service - we have phone, internet and cable from them - since there have been times when the "earliest" appointment they could give me for a problem was a week or more later. Keep after them - it is frustrating, but eventually they may get the idea.