This letter expresses your displeasure at a bank which continually has long lines at the teller counter.
1234, Main Street
Boston, MA 02123
04 April, 2005
<Recipient Address Goes Here>
The past several times I have come into the bank to conduct business, I have been dismayed to find the line for the teller windows ridiculously long. It has not been unusual for me to have to wait in line for <time you've waited>. Since, ultimately, yours is a service industry, I am sure you would agree that making your customers wait over <tolerable time> is not the best way to meet their needs.
I would suggest that you take a look at this situation and see what you can do about shortening the wait time in the teller line. I am sure all your customers would appreciate any efforts on your part to improve the service at <name of bank>. Thank you.
encl: <List of enclosed items goes here>