Unfair Please Help Me!!

My account is 5 years old i know every champion abilities mechanics... im pretty good player i can say , all seasons that i played i didnt play a lot and i was reaching almost silver or gold but this year i worked hard from semptember until season ends to go to platinum and i did it because i know im good player just before 2 days ago i recieved a ban for mmr boosting for 14 days... this is so frustrated help me please noone played or boosted me to platinum i worked hard to get one skin just to be banned.... i was pretty angry about this matter and i said that i will go this matter legally but i dont know how and i dont know if i actually want this i just need for my ban to be removed because i know its unfair.... https://imgur.com/a/UFcGE here is the conversation pls help me ....

http://eune.op.gg/summoner/userName=nataliaxx here are my stats i did many pentakills also u can see my games i always play good have good kills noone played from my account ......

also the ban made me cry because this is so unfair i worked hard 4 months to play everyday and be good in sembtemper i flame and took 5 games ban for chat i understand that completly and i was good all that time and i get this ban im crying this is unfair help me please.