It's not normal to cry multiple times a week at work...

right? I work in customer service at a 30-employee company and almost everyone there is severely overworked. I know I am a valuable asset to them because if I take a vacation or sick day, I come back to so many questions and issues. And I've only been there 16 months! I am not afraid to bring up these concerns to my supervisors and I am listened to, but nothing is done about it in the long run. I work closely with the VP of Operations and he knew how stressed I was the last few weeks. We had some employee transition and I was responsible for a lot of projects in the interim. While I was so stressed about it I was drowning, he took 2 vacations on back-to-back weekends. I know these vacations were planned weeks in advance but it still felt like a slap in the face. The first weekend, he didn't even tell me he was gone and so my Teams messages were being sent to space (he does not turn on his out of office because he thinks he will still reply to things.... he doesn't). All this frustration is just building up inside of me which results in crying in my car on the way home most days a week. And yes, I am on the job hunt. I have turned in at least 30 applications over the last 5 weeks or so. Not a single call back. It's really hard to be patient and get through the day. Sorry for the long rant and thanks to anyone who stuck around this long.