Hi there - hoping someone can help me figure this out. My friend referred me to Tesla solar installation and is getting the option of either the $400 cash or $750 Tesla credit. He doesn't have a use for the Tesla credit, but I do, since I have a Model 3 and haven't purchased a wall charger. I figured I could have him buy the wall charger with his referral credit and then I'd get it installed on my own, but that would only use $500 of the $750, and I would hate to see the rest of it go to waste. He said that the correspondence he received indicated that it can't be used on merchandise (darn, can't just get a bunch of t-shirts !), but the wall charger is something it could be used on. Any experiences or thoughts in regards to this?