The interior competitions

Recently, our head office required all of the staff of the head office should work in the front-line branches for one day. So, yesterday, I went to a branch and worked there. During the time of working there, I found out that the branch's business was really busy. Within one day, each clerk needs to deal with several hundred transactions. Comparing with other institutions, this situation really makes us confident for our business and outlook. But the most important issue I found out is the "Interior competitions".Speaking of the "Interior competitions", once I took a taxi, after the driver realized I was a clerk of our bank, he asked me a question. The followings are our dialog.
Driver(D): why each time I draw money at your bank's different savings offices, they ask me to change a new passbook?
Me(M): Really?
D:Really. They said there is something wrong with my passbook, and they need to change a new one for me. Especially, I went to the different savings office and was given the same treatment.
M: Sorry, I donot know the reason. If you face the same situation next time, maybe you can ask them clearly. I am really sorry.
But yesterday, I found the answer. The savings office just wanted to change the passbook into another one which is issured by itself. Then, the amount on this new passbook can be calculated as this savings office's contribution.
By comparision, this savings office tells the customers the truth. They did not make any excuse.,and did not lie to the customers. But it also brings trougbles to the customers. Summarising in one word: "Interior competition".I think, putting more attention and emphasis on the amount of savings is the main reason that causes this phenomenon rising. As a clerk of the manangement department, we should think it over.