The Treasurer/Collector's office cannot make changes to your invoice. For real estate and personal property tax bills, you will need to contact the Assessor's Office. Their number is 508-366-3010. For water/sewer bills, you will need to contact the Department of Public Works. Their number is 508-366-3070.
The bill information on your excise tax invoice comes from the Registry of Motor Vehicles. Any changes made there will reflect on the following year's bill.