LP being lost instead of gained

I was playing ranked when out of no where my game stopped working so naturally I went to go leave game and join back but was surprised at the fact I couldn't join I was more surprised at this because I haven't been lagging any all day but luckily for me I had a friend on the inside and it happend to 7 other people then after the game even though I wasn't there for 4 maybe 5 minutes because of the crash I lost 17 LP instead of gaining so if you would please I would like my LP back and the amount I would've gained