Regulation 14 Meter Complaint (1) The supplier shall visit a customer's premises within twenty-four hours after receipt of a meter complaint from that customer in respect of the following matters(a) that the electric meter on the customer's premises is or may have been operating outside the permitted margins of error; or (b) that an event has occurred or circumstances exist which the supplier may reasonably expect to have been the cause of a meter operating beyond its margins of error; and for that reason the supplier shall investigate the complaint. (2) A supplier shall after establishing a defect in the operation of a customer's meter replace the customer's defective meter within forty-eight hours. (3) The supplier shall use an estimated consumption for billing the customer for up to six months, where the supplier has no meter in stock for replacing a defective meter in accordance with subregulation (2). (4) A supplier who contravenes subregulations (1) to (3) shall pay to the customer the sum prescribed in the Schedule.