I've no idea if this is normal behaviour but i highly doubt it. They should realise that sometimes investments dont work out and thats what happens. If you're

I've no idea if this is normal behaviour but i highly doubt it. They should realise that sometimes investments dont work out and thats what happens. If you're open to it then allow them to invest in your new company, but dont give them it for free and dont discount it either, otherwise you're letting yourself get taken advantage of.