Dress woes-advice on how to make it up to friends

So I found my dress in August. Was assured that the dress wouldn't take long to arrive (told it takes 6-8 weeks to make)
We did the start of a deposit in Sept, and then the rest of it in October

Stressed that it needed to be here by February at the latest (wedding is in may) as I am a baker, chocolatier and a childcare provider and that as of the end of March I would have no time to deal with dress stuff
Had them reassure me and a friend that it would arrive with plenty of time. I went in at the start of Feb and put more money on the dress (leaving only $400 outstanding) and said I would be in at the second last week of the month to finish paying and pick it up, told that wouldnt be a problem. So Feb 13 comes around and I call asking if I can come in to try the dress on as my friend that is doing make up with me will be in (to which she said no problem) to have her call back ten minutes later to say the dress wasn't there. She told me the owner of the salon would call me that day to update me as to where it was. Waited all week for her to call (I know I could have called but my anxiety was so high that I ended up sick) Friday rolled around and still no call so my friend that did the original portion of the deposit called to find out that the dress wont be here until second last week of March, but I could pay a rush fee but they couldn't give a date as to when the dress would arrive. The owner blamed me for talking to her sole employee and not her (she wasn't there when I phoned) and then blamed the manufacturer saying they don't always make once they get the order (My friend called the manufacturer who informed her that the dress is complete within 8 weeks of the order being placed)
The owner of the salon is refusing to tell us or show us when she ordered it.
Since all this I have since bought an off the rack dress as my feelings towards the dress are completely destroyed and the bridal salon is refusing to refund us any of the money, so now I am stuck with two dresses; one that made me literally sick and have a meltdown. I made arrangements to do consignment on the new dress. But I'm feeling pretty stressed about all of it and it sucks.

I feel like I was a bridezilla because the stress made me ill and I feel bad for my team of friends that helped me all last week and put up with helping me find a new dress.
How can I make it up to my team of friends?