I had a weird positive experience with Google lately. An account rep messed up all my AdWords (I still call it that) campaigns and blew $900 on worthless mistargeted clicks on Christmas Eve 2018. My request for refund was denied, so I chargebacked and got banned (who cares).

I need to use AdWords again next month so I reactivated the account and asked for another appeal. They immediately deleted the $900 debt and unbanned me.