I got banned :(

I was in my 5th year, and they claimed I used third-party apps. I already sent them a message, and they keep repeating and replying with the same email. I play on my iPhone, and as far as I know, it's not possible to use and download APKs. Does anyone know a way to reverse this? I had only been playing again for about two months and bought the monthly passes. Can I give up hope of recovering it now?