Our Invitations are Not ready & may never be... They were supposed to be in the mail already 😐

Our Wedding date is March 23, 2019. We did not send save the dates. Today my Mom & I were finally going to put our Wedding Invitations in the mail after waiting much longer than we ever expected... I received an email telling us that our Invitations are not ready for pick up & the long & short of it, is they may never be ready! I am terribly upset, shocked & embarrassed at our Invitation Lady. Let's call her Cathy. My Mom & I drove 45 min to meet with Cathy twice b4 my Mom gave deposit. We ordered our lovely Invitations on Dec 6, 2018. I didn't have our meal choices until Dec 20, 2018 due to meal tasting schedule. I had emailed Cathy several times to give her proper spelling, ceremony time, venue address etc & was asking when we'd get to see a mock up etc. Not 1 reply... By Dec 23 & no response to any emails or voicemail, I had no mock up, no script choices etc. I was really freaking out! I finally... got her on the phone that day & she told me that all my emails had gone to her junk mail, that she'd assumed we were overwhelmed with the fact that FMIL was/is awaiting a triple bypass etc. I said umm well you must've received my voicemails & she said, I'm not sure. I've been chasing her ever since. I'd say that I send 3 -4 emails with no response & by day 2 I'd call to get answers. I made it very clear that I needed responses on a regular basis & she assured me np, we had so much time that I was worrying for nothing... We are having her do everything from Guest addresses, our return address to Invitations. What I consider a big job.
The bottom line is that our Wedding Invitations are not ready & the company she used will not give her a finish date or a tracking # b/c obviously they are not done. Apparently when she ordered the glimmer white laser cut shells, they were out of that card stock so they had to order it in. If... I had known that, we would've changed to shimmer white to avoid a hold up but this was not communicated to me until 2 days ago when I was upset we haven't gotten our invitations yet. People are asking where their invitations are which makes me feel embarrassed & makes it look like we've dropped the ball. Cathy says that she has lost sleep over this & if I think I'm upset, imagine how she feels etc. 30 minutes of me in tears (on my birthday yesterday) starring at my Mom in disbelief, apologizes and a whole lot of reasons this is not her fault basically. The only "Solution " she can come up with is that we send out save the dates which she'd incure the costs for & they could be mailed out today by 11am... I said absolutely not b/c save the dates usually go out 6 months prior. She had the idea to send out cards that say "We're getting married!" with our names, date & it says Formal Invitation soon to follow with meal choices & RSVP. (sounds better than that, I don't remember exact wording) My Mom said we must get something in the mail asap, I agreed & they are in the mail now (as far as I know frig) The Invitations we ordered may not come in next week. Will they ever come? I don't know & neither does she really... Shes going to have an email ready to send me for us to choose new invitations (yep, unreal but you read right) on Monday if the company still won't give her answers. The new Invitations would then need to be ordered from a different company. Tick tock is all I can think about. She has everything printed & ready to insert once original or new Invitations arrive. She told me she would call today if she was able to get answers & it's now 5:27 PM with no call. What can I do? I never ever imagined with hiring a reputable professional that this could happen. If you have read all of my rant, I thank you. This has been difficult to share. It is a lot of stress that we don't need, that's for sure.