Sorry to say, but I'm sure that they won't "sort out" a thing. It is as it is.
Apart from that, your last MP games were only A/S which don't count to the completion rate, neither good nor bad.
100 other MP games count to that stats, and you have to push out enough "uncompleted" to achieve a change. You might want to find a friend in similar position and play a bunch of quick&dirty Blitz with him. Starter balls, disregard the results. Start with 30 games and continue if necessary.