Account got a 14-day suspension for a misunderstandment

I was talking playing with 3 friends, making a premade team of 4. From those 3, I was in voice chat with 2 of them. We were making jokes with one word in spanish. One of those friends did not speak spanish so my other fiend and I were explaining him this words meaning in spanish. Then, we told him how it is spelled and for that, I typed this word in the chat, I did not direct it to anyone nor used it in a sentence, I just typed it in the chat 2 times. And after that game and for the first time in 2 years, I got a penalty. This is my first penalty, and now I am one step away from getting a permanent ban. Is it possible to remove the penalty? Please if a Rioter sees this, tell me if it is possible and how can I fix this misunderstandment. I did not ofend anyone in my team.