关于注销，我英语不好，所以只能引用点查来的。
老友记(FRIENDS) 4-4:
I wanna quit the gym.
I wanna quit the bank!
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What is Sign Off (Log Off)? - Computer Hope翻译此页

2020-1-1 · Sign off may refer to any of the following:. 1. Alternatively referred to as log, log off, and sign out, sign off is the process of disconnecting from a network or account voluntarily. For example, to check your credit card balance, you log into your account. When you are done reviewing the information, you log out, which is the same as signing off.
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LONGMAN:
sign off phr v
informal to end a radio or television programme by saying goodbye
to write your final message at the end of an informal letter
　It's getting late so I'll sign off now. Love, John.
sign sb off
BrE if a doctor signs someone off, he or she gives them a note saying that they are ill and not able to work
　For the last month she has been signed off sick from work.
sign sth⇔off
BrE sign off on sth AmE
to show that you approve of a plan or that something is finished by signing an official document
　Major repainting work now needs to be signed off by a qualified engineer.
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牛津：open/close an account 开[结束]户头

建议不要轻易跳出来说英语好:-)，这两天看钱歌川的《英文疑难详解》，
Remember the time I and you drove into Volognes -- J. D. Salinger: Nine Stories
我上高中时，What?!还大错特错，Pardon?才对
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FROM 106.121.168.*

How to Close a Bank of America Account Online | …翻译此页

To cancel your checking or savings account by phone, call 800-432-1000. You can also close your checking or savings account by sending a letter to Bank of America, FL1-300-01-29, P.O. Box 25118, Tampa, FL 33622-5118. The letter should be signed by everyone whose name is on the account. No matter how you choose to close your account, be prepared ...
https://www.sapling.com/13712966/how-to-close-a-bank-of-america-account-online
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FROM 106.121.168.*