Section R746-346-7 - Customer ComplaintsA. Toll-Free Number -- The operator service provider shall have a toll-free telephone number that callers may use from 8 a.m. to 5 p.m., Monday through Friday to make complaints and inquiries.B. Process -- Upon complaint to the operator service provider by a customer either at its office, by letter, or by telephone, the operator service provider may attempt to resolve the complaint, but if it is unwilling or unable to do so shall advise the complainant of the Commission's complaint process and give the complainant the address and telephone number of the Compliance and Complaint Section of the Division. If appropriate, the operator service provider shall also give the customer the Commission's telephone device for the deaf number.C. Investigation -- The operator service provider shall make an investigation of complaints forwarded from the Commission on behalf of a customer. The operator service provider shall formally advise the Commission of the results of the investigation within ten days after the complaint is forwarded by the Commission.Utah Admin. Code R746-346-7