Series Bug: Gives one free win then I lose one game and says I am out of series.

So I was Gold 3 series for gold 2. It gave me a free win and I lost the next game and instead of just being a loss and being 1-1 for my series. It dropped me instead and put me down to 79LP. This has happened to me 3 times during different series when I was climbing. Its really frustrating. Please fix this problem.