Pubg Mobile — My Id got banned for no reason

Website:

www.pubgmobile.com

My i'd[protected] got banned for no reason. A level 73 i'd got banned for no reason because your anti cheat system detected it. How could you be so careless. I bought a new phone and when i logged to my old phone again they banned my i'd. I have given almost 3year to this. You know what it takes to make a level 73 i'd. Royal pass from season 4, prime membership. And they just ban it for a #. Please help me to unban my account. I have written then 10 times but everytime automated reply.
Please help me