ILMER USA 'Physical Access' to Brick & Mortar Store: Monday - Thursday: 9:00am to 4:00pm CST. Brick & Mortar Store is Closed to Access on Fridays! Sales & Service Business Hours: Monday - Friday: 7:00am to 6:00pm CST. Saturday: 8:00am to 1:00pm CST. Phone 563-946-2121. WE DO RETURN CALLS: So, If your call goes' to Voicemail, leave your first & last name, your phone number, and the nature of your call! 24-7 On-Line Access & Messaging: [email protected]