回複：沒人理我，再發一遍，恭請大家獻計獻策

For the medical insurance fee, you may need to pay it off if your new job didn't cover that period. However, you should go through details with University's benefit office to figure out reasonable coverage. Usually, they are nice and follow policy to deal with you. For your prepaid ticket money, do you know who was the end receiver? You need to get help from HR and financial manager of your previous Department. You may write email to HR and cc to your previous boss. Good luck!