logged in after 2 week absence, now almost all my rp is gone...

So I Launch league today after a 2 week absence (was out for work) and I go to my store to look at the skins that are one sale and see that almost all my rp is gone...I had around 2k roughly, and now i only have 781... so i look at my purchase history and it says that I gifted 2 mystery skins to some guy ive never seen before & that he somehow randomly showed up on my friends list. so i messaged him and of course no response. is there anyway at all to try and get my rp back? its very frustrating because i dont make enough money to buy rp so i use reward points from various gas stations to buy rp cards once a year on my birthday. i just dunno what to do. any advise??