English to Turkish Law/Patents Law: Taxation & Customs

Dear Colleagues,

I don't speak Turkish at all. That's why I don't actually ask you to make suggestions for translation into Turkish, but would like to ask you to provide a synonym or a short explanation in English.

I need to translate a power of attorney issued to Turkish customs brokers from English into Russian, but unfortunately cannot understand this phrase. I believe colleagues with a Turkish background can help me.

Context (list of powers):
to deposit all kinds of security payments to Accountancy Department, to make objections relating to these payments and recollect deposited amounts and securities, to deliver and receive documents relating to these payments, to collect ***cheque surplus*** rebates by the Accountancy Department from relevant banks, to deposit and recollect storage fees and freight costs.

Here I think that Accountancy Department is perhaps an incorrect translation and something more like "tax office" might be meant, but naturally I cannot be sure.

Thank you very much in advance for your help.