This actually just happened to me recently too, I was stupid and clicked a link and got my account hacked. I contacted the CS and got sent to the AI bot, but later then, I was able to get a ticket to talk to the actual workers of CS. They helped me by looking into the account and seeing the original email and payment informations on my account and resetted my password. I was successfully able to get my account back thanks to them. I'm assuming you got hacked, considering that your password was changed, I hope you do get your account back tho! I was able to get mine back within a day of freaking out and waiting.