My sister actually dealt with this but I'll write it. We were trying to get a outside furniture set delivered because we don't have a big enough vehicle. They called 3 times, the first time to set the delivery on the 7th, the second to set the delivery on the 13th because the first misspoke, and a 3rd to attempt to change it to a later date but my sister was fed up and got it here a few days sooner.
We set the delivery for the evening, after 4:00 P.M we're told, but get a call the day of at 12:00 P.M telling us they'll be there in half an hour. Thank goodness are goal was to just sleep in on a nice Saturday morning but it's annoying to know you can't trust the business when they guarantee a certain time. Definitely will be looking else where next time.