[Ubisoft Account]Account hacked and banned

ok, so this happend in 2019 in august i think and my account was hacked by some russian guy (if anyone knows how i can show proof of this please help me i cant find the email where he managed to half assedly bypass 2FA without any substantial proof) and its clear this wasnt me the language was different and so was the ip it was a genuine ip from russia and the language was in russian and this guy was speaking russian to customer support to get into my account fluently and i dont even speak russian i can only speak russian and a bit of mandarin please i really want to get my account back and play r6 cus more of my friends have switched to pc and are playing r6 again if there is any surefire way i can prove this wasnt me so i can get my account back PLEASE let me know this wasnt me who did this i just want to play r6 again and hope i didnt waste my money just for 2fa to be as easily bypassed as it was to get into my account.