Florida Delta Mechanical Inc review: Installation of new hot water heater

Delta Mechanical advertises "same day installation" for hot water heaters on their website and is the Pro contractor for Home Depot offering "24-hour installation". I had a leaking hot water heater and had to turn the water off for the entire house and selected Home Depot for the speed of installation. I am in Florida and the Delta call center is in Arizona which immediately raised alarms. I called Delta at 1202 Monday 5 Oct and was told by Oscar I had a 2-6 appt for the estimate. At 1422, I was told by Oscar the Tech is on his way. At 1845 I called and told Delta I needed the quote (I have hookups for electric and gas and needed to decide on which type). On Tues, at 1354 I received an email with the quote (rep was "out sick" was the excuse for the delay). On Tues, at 2000, in an effort to speed the process up I personally purchased and loaded the new water heater kit in my car and placed it in the garage. On Wed, 7 Oct at 0844, I emailed and left a voice mail saying I approved the installation less the purchase of the water heater with the deletion of several items that were not needed in the quote. At 1700 I called Delta again wanting to know what was going on and talked to Art and Brian. I was told that I had a Thur 12-4PM installation appointment. The water heater was installed and operational around 1300 on Thurs (Arden the installer was excellent). Start to finish, 72 hours. Not same day, not 24 hours. False advertising by Delta and Home Depot. Home Depot offered a 10% rebate on the water heater in compensation but my real problem was the ~$2000 72 hour installation with Delta.