Batteries Plus Blubs

My car battery suddenly died and I needed a quick replacement so I did a search and found this store. They had my size battery in stock so I ordered one online. My experience would have been 5 stars but their website let me down for two reasons. First it boldly states «Free installation in 20 minutes or less. No appointment needed.» When I get there the salesman asked if I wanted it installed. I said sure isn’t it free? He said only at participating stores and this was not one of them. So it will be $ 20 to have it installed. I asked if they had tools to borrow so I could install it myself. They said yes and brought me the tools. No where on the website does it state which stores will install for free and what the charge is if it’s not free. My second issue is the site says I will get 10% off if I order online and pick up at the store. The site did not accept the promotion code and charged me full price. When I told the salesman about this he said he’s sorry about that and that it’s too bad since they already charged my credit card. I think something could have been done to get my discount. Oh well.