I'm old, done this job thing a lot. This is a road that goes both ways.
Send them a thank you card, thank them for taking the time to interview you.
Wait a few days for the card to arrive. Make one more call back, if they blow you off,,,,,,
Send one more card, email, voice message, stop in, in person, whatever, thanking them, for the opportunity, but tell them, due to their lack of appropriate response to your previous contact, you have decided, that there management style, does not fit, with in your work ethics, and tell them to have a nice day!