I won't be contacting anymore - my 100+ calls just for this one itinerary is enough.
That is of course, unless I can upgrade my PE leg from London to Singapore to Business if any new seats pop up between now and October - at this rate its very low as not even many Economy reward seats are available.
I'm also not prepared to transit via India (or anywhere on the subcontinent) / Emirates (due to no OWA capping) to gain business class either.