Root nerve became exposed when I got Invisalign buttons attached? (photo)

I just got Invisalign two days ago- the dental assistant was very sloppy with the bitter tooth conditioner and it seeped under my gumline. My mouth became very irritated and sensitive! I have no idea what to do- there is now exposed soft tissue from my tooth that is excruciating to brush over. Both examples are highlighted in the photo. I don't even know who to call to fix this- any advice is greatly appreciated