Do you have share that need to vest or something? If not leave with a big middle finger. Or tell them to smarten the fuck up, and tell them your team works in

Do you have share that need to vest or something? If not leave with a big middle finger. Or tell them to smarten the fuck up, and tell them your team works in Agile, or whatever your project management scheme was at the startup. They bough you for a reason, probably because you guys did something they couldn't, don't be afraid to remind them.