Home Services at The Home Depot

So I needed a water heater. I chose to buy one from home Depot because it was said and advertised that if you bought from them they would install. So I buy this water heater then ask who I need to talk to have someone come out and install. The gentleman tells me that they provide that service everywhere but Helena Mt. I said then why is it advertised that you do. He tells don't ask me ask corporate. Really?? Just because of this I will never buy from home Depot again. Oh and they talked me into getting a home Depot card. Guess that's going in the shredder. How dare you lie to get someone to buy your product and claiming to install it if buy from them. Just to tell me after the case you install everywhere else in MT just not Helena Mt. The state capital.