Account Overwritten

Hey everybody. I have been kicked out of my account for 4 days. I kept getting the “unable to sign in” error. After emailing support, they told me to try selecting new player instead of returning player and singing in again with my Pokemon Trainer Club user and password. Well, I did that and now my account is overwritten and back to level 1. When I tried to put my new trainer nickname the same as my old one, it says that name is unavailable so I know my account is still out there somewhere. I know that my credentials for my PTC account are correct since I can log into the PTC website. I have been playing with my original account since the app released in 2016 :( Does anyone have any tips? I am freaking out a little bit. I’ve spent way too much money on this app and I just need to know if I will ever get my account back or if I should just give up.