New Venue?

Last May we signed a contract with our venue, we fell in love. We loved it so much that we switched our date to be able to get married there. Fast forward we get an email from the woman who coordinates weddings to let us know she will be leaving and someone new would be coming on to take her roll.
We went to take a peak a couple weeks ago and the new woman in charge seemed as if we were a bother to come and take some measurements, and kept referring to me by the wrong name.
Fast forward again to yesterday where she told us they changed the menu and we needed to pick something else charging us $20 more per person! She then stated that since our numbers dropped by a few that we would also now have to pay almost $3,000 more because she doesn't want to honor the contract! Where it would be cheaper for us to just invite a few coworkers to fill those spots.
She was over 15 minutes late for our meeting and she was very rude. She kept saying "my hair is so frizzy, it was so beautiful out I just didn't want to come to work" It felt as if she was just trying to upsell us the whole time, as if she was on commission.
I guess to get to the point I have a really bad taste after the meeting and I want to change venues. Has anyone changed 3 1/2 months out? I need some options on what to do, I don't want to sound bratty but I cannot imagine having her running my whole day. 😔