Moderator, Iberia Airlines, Airport Lounges, and Ambassador, British Airways Executive Club
Join Date: Feb 2010
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I would call Customer Relations around 15 hrs, BST, and discuss it with them. Make sure you are talking to Newcastle.
If not, and assuming this isn't the inbound of a return flight, should you just want a clean process and you are totally sure on the timings, give 16 days written notice and get yourself in the MCOL logic.
Having said that, if this was a manual refund it's possible that the refund is still ongoing and BA's contractors in New Delhi just haven't understood the issue. Refunds can take a very long time.
Let us know how you get on, this is the sort of thing where only about one in five of those who raise these sorts of questions actually pass on the final outcome, unfortunately.