1234, Main Street
Boston, MA 02123
<Recipient Address Goes Here>
I enjoy doing business with <company name>, and I like the <products/services> I receive from you. However, your hours of business have become a genuine inconvenience for me, and they make it difficult for me to continue as a customer.
I would like to <suggestion>. I think this would be mutually beneficial. Please contact me at <phone number> to discuss this issue. I look forward to speaking with you.
encl: <List of enclosed items goes here>