I've raised to problems of indexing with SP and had next day replies for both. The first one was a genuine indexing error and they gave me credits back.
The second one was technically correct but led me to the wrong person. They've explained where I misinterpreted information (and my excuse was it was after midnight and a long day - nothing to do with old age!!)and they have still given me back my credits.
So it is always worth asking!
Liz