A caller identifying herself as "ELLA" with "EARTH RESOURCES" called. Caller id displayed (412) 281-3386 - Pittsburg PA. ELLA demanded to speak with the the owner of our company (by first name only), refusing to state the nature of or reason for her call. ELLA refused to leave her full name & call back number and provide a any information as to the reason of her call. ELLA was rude and hung up abruptly.