[sammyg2]

Pretty simple really. You do not want to deal with this company on any level.
Take whatever steps you can to severe all relationships with them.


Here's something I tell folks who work for me regarding business ethics and what's OK and isn't:

"Never do or say anything you wouldn't say or do in front of an audience made up of the entire company you work for".

So, applying that statement, would you put up with the crap you are getting from this company if you had an audience of your peers watching?
Would you continue to be their customer knowing how poorly they treat others (including you)?
I bet the answer is no on both counts.
I understand there's a limit to what you can do because of the orders you recieve from upstairs, but you still know what's right and can try to move that direction as much as possible.