Dear Mr. Lawrence:

This is a reminder that your account of $15,000, originally due May 1, has not yet arrived.

If you have already mailed your payment, please disregard this letter.

Many thanks.

Yours sincerely,

________________

Dear Mr. Lawrence:

Our records show that your account of $15,000 is still outstanding (未付). Perhaps you are experiencing problems that make it difficult for you to pay. Please let us know if that is so, and we will be happy to work the matter out with you.

If there is no problem, please remit (匯寄) the sum today.

Yours sincerely,

________________

Dear Mr. Lawrence:

Although we have sent you 2 letters regarding your past-due account of $15,000, we have heard nothing from you.

We hope you understand we are unable to continue waiting patiently in silence. Please do not disappoint us once more.

If your check is already in the mail, please ignore this letter.

Yours sincerely,

________________

Dear Mr. Lawrence:

Since you have ignored several requests for payment, we must take other action to collect your past-due account of $15,000.

Unless we hear from you in 10 business days (工作日), we will turn your account to a collection agency. Neither of us wants to see your credit in danger. So if payment has not yet been made, we urge you to send your check as soon as possible.

Yours sincerely,

________________