Membership imposes an obligation to maintain standards of both quality and service, and provides dissatisfied customers with an officially recognized channel for redressing complaints; the number to call is Tel. 2508 1234.
Customers have to call during normal working hours.
mnli hypothesis: Customers have to call during normal working hours. premise: Membership imposes an obligation to maintain standards of both quality and service, and provides dissatisfied customers with an officially recognized channel for redressing complaints; the number to call is Tel. 2508 1234.