Guaranty Bank ← View details 1220 Theil Street, Hartford, WI 53027 +1 800-235-4636 guarantybank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 10:00 am — 07:00 pm Tuesday: 10:00 am — 07:00 pm Wednesday: 10:00 am — 07:00 pm Thursday: 10:00 am — 07:00 pm Friday: 10:00 am — 07:00 pm Saturday: 09:00 am — 04:00 pm Your comments * — Required information