If you think you qualify for a Renters' Rebate, but you haven't been able to get a landlord's certificate, this page tells you who to call. (VT Tax Dept. Website).
If you are unable to get a completed Landlord's Certificate from your Landlord(s), contact the Vermont Tax Department's Taxpayer Services division at (802)828-2865 or toll free in Vermont 866-828-2865.