WARNING: mad mother about to vent!

As many of you know we are still waiting on Brooklyn's wheelchair. We were told the process is a 14 to 16 week process we are still in that time frame - today is exactly 14 weeks from our initial home visit with National Seating Inc.
However....last night I received an email from them saying:
Mrs. Butler:
Sorry I didn’t get back to right away. I was checking into the status for you.
There was some confusion and it was inputted that Brooklyn had Special Childrens and when I called to follow-up on the request that was submitted, I found out she does not. I do apologize for the inconvience.
I also wanted to reverify your insurance to make sure there has not been anything put towards the deductible since was originally verified. Nothing has been met towards the $400.00 deductible, so the amount that you would be responsible for is: $1,492.92. That includes the deductible and then the 30% co-payment from insurance.
Our company does require at least a 25% down payment (which would be $373.23) for ordering the equipment. The remaining balance ($1119.69) would then be due at delivery of equipment.
You can do the payment by a check (I can send you a receipt) or also by credit card. We accept Visa, MaterCard, American Express, and Discover.
If you have any further questions, please let me know and I would be happy to assist you.
Thank you.
First, she is apologizing because I had left three voice mail messages and two emails before receiving this detailed email. Second, we are being told to pay almost $400 before the wheelchair will even be ordered. I am sorry, we THOUGHT it had already BEEN ordered. Third and MOST IMPORTANTLY, we have been approved through our insurance for 100% coverage since sometime in February. Grrrrrr
I have been on the phone with 3 separate representatives from our insurance company all of them assure me we are covered 100% and we should have NO out of pocket costs. Not even the deductible. I am waiting to hear back from our National Seating rep who is calling our insurance to "get things figured out." At this point I am not sure why I have not heard back from them seeing how I have reached my insurance THREE times since I talked with National Seating. What a nightmare!
Thanks for letting me vent....to be continued.....