Sorry to hear that... I have ordered from them several times in the past - never ever had a problem. I would definitely tell them by email, snail mail, fax, phone, every possible way that I would not be using them and exactly, in detail why I would not be using them again. Did you get any names of who helped you - I learned the hard way to get names anytime I talk to anyone in any company.
No matter how 'downsized' they have become they should NEVER treat a customer (their bread and butter) like that.
Hope you never have to go through that with any other company again.