Received an email regarding a position and request...

Received an email regarding a position and requested I ring to discuss. Which I promptly did 3 times and left voicemails with contact details, I also reverted on the email received. Never heard a word back until they contacted me a few weeks later about another position. No interest after the complete lack of professionalism and rudeness I experienced first time around.
How a company with that level of non existent professionalism can continue in existence is beyond me.
If I could rate them at zero stars I would