I had to give my notice

I was the account assistant for a growing aircraft company. When I was on maternity leave, my manager left. I contacted the finance director who invited me in for a chat. I was then informed that the structure of the department had changed. The temp who was covering for my maternity leave was now in charge of the department, they had a credit controller and a clerk. Of course I could come back, open and frank the mail, make coffee for meetings and pick up the sandwiches at lunch, even help in the warehouse when short of staff. So from no. 2 in finance to junior nothing. I had to give my notice.