Lavonia Chamber of Commerce Members Go back to directory. Add to Address Book. H&R Block Lavonia H&R Block LavoniaBy the Numbers Tax & Accounting Contact: Shannon Weber Work P O Box 235 Lavonia Georgia 30553 work Work Phone: 706-356-4312work Work Email: shannon.weber@hrblock.comINTERNET Categories: Banking and Finance, Business Services Updated 2 months ago.