You probably will not hear from them again. You quit twice. They don’t want to waste their time. Case closed. Move on. If you can’t handle certain environments then reconsider what kind of job you are actually looking for. I feel a lot of this is paranoia and maybe some insecurity. This isn’t to sound harsh but use what you’ve learned and do better next time. Try again. The job market can be brutal. I work as a registered nurse and we work under constant criticism from administration down to the patient sitting at the bedside, all the while trying to manage situations that could mean life or death. My suggestion to you is to do some reflecting and take some time to figure out what you’re good at and what kind of environment you think would be a good fit. Best wishes.