I believe, and while I know it is hard to believe, I have found a company who gives delivery times and is worse than Comcast….
Lowes delivery sucks.

We were told when we purchased our washer, dryer and dishwasher that all 3 would be delivered Friday. Receive a call Wednesday morning that our dishwasher would be delivered Thursday between 11-2. I changed my schedule and plans to be home.
Last night we received a call that our washer and dryer would be delivered between 4:30-6pm tonight. I just got a call that they are 45 minutes away. Told the man we were told between 4:30-6pm and he mumbles something in a foreign language!
So annoyed.