please, don't fret it. it is perfectly healthy to quit because you do not feel fine in this environment. i did it often, and it never influenced any references. a company that answers you 'that is very unprofessional' instead of 'i'm sorry things aren't working out, what could we do to do things better' is clearly a company that only cares about numbers, what they look like and time that will "wasted". FUCK THEM.
Thank you! Your site is amazing too :)