Long refund lead time after error on their side

A few hours after making a flight booking, I received an SMS stating that my return flight on BA has been rescheduled. As I was already on a tight schedule and would not have been able to to make the newly scheduled flight 45mins earlier. I phoned the call center and requested that they change my return flight to a later Kulula flight. As they are unable to change bookings between BA and Kulula, I then requested to have the entire booking cancelled and refunded.<br> <br> The agent told me that as it is being cancelled due to a schedule change on their side, I would be fully refunded. However, the refund would take between 6-8 weeks. After protesting that it would take so long to refund, the agent informed me that because it was due to a change on their side, it would be refunded \a little faster". It is now a week later"