There was a zip file attachment to this email received this morning.

Should I open it?

Dear Client,

According to the reconciliation of the Department of Finance there are the arrears following your client account totaling in $697,25 .

We attach the last unpaid invoice #71023099 to this letter and kindly ask you pay it off until March 31, 2016.

Please check out the file and do not hesitate to pay off the debt. We look forward to your reasonableness.