Unless they are telling different OTA customers different things
Voucher details
1. Can only be used by affected customers, discount is not transferrable and has no cash value
2. Bookings to be made via the original travel agent. Discount is not available via BA directly or via another agent.
3. New booking must be made by 31 July 2018 for travel by 30 June 2019
4. £100 per customer to be used against a future booking on BA services