caller refused to state where she was calling from and said I was being 'ugly'
since I had asked her twice where she was from.

Company is from TEXAS: This company used to operate under "Managed Petroleum Group" at (469) 916-4980. I googled the original company name and number months ago when they called being jerks, and I read on another site like this one that they were soon changing their name to ENSIGHT. So I wrote it down and remembered it when they called. They ask for our President and CEO, and use nicknames for them and laugh and giggle like they are old buddies. If I can remember correctly, they want to ask the higher-ups questions to get info about how your company operates and then try to sell the information to people who could potentially buy your company. Regardless, these people lie, and say anything they can to get the information they want; they try to manipulate people, and will call you down to the lowest if you do not give them what they want. Also, don't waste your time trying to speak to a manager, because they are in a call center, and just swap their headset with the douche-bag next to them and they support each others' lewd behavior.

would not leave a message when i asked said they would call back.

It seems that if you say "good  morning" or "good afternoon" as opposed to "hello", the word recognition software doesn't trigger a transfer and you don't get a person - all you have is dead air and an eventual disconnect. Much better than getting some idiot on the other end.

Update - It seems their software has improved - it now picks up. Rats.