Feel so 无奈

Sometimes i really hate my job... Not that it is bad.. But because there is no support given.. My job is very passive.. All i can do is to nag to my customers asking them to remember to do visa, to give me names to book tickets.. IF customers kept on delaying, resulting in no visa done or no more flight seats, it became my fault..

The customers blamed me, management blamed me.. In the end, everyone is correct, except me.. What is the point of working like this? No reason and getting very tired trying to solve the problems.. Just feel very unappreciated all the time..