possible victim of non-spendable scam
Yea they can still access your wallet. 

When the scammer created the wallet, they will have written down the mnemonic seed phrase for the wallet. With this seed phrase, they can recreate your wallet using some other software, since the seed phrase will allow them to derive all of the same addresses. They do not need the password to do this, and changing the password will not stop them either. 

Think of it like this: you have a secret (the seed phrase) hidden in a box, and your password is the lock on the box that protects that secret. If the scammer steals the secret before you lock the box, they won’t need your password. They already have the secret! 

So, the best thing to do is just never use that wallet (or seed phrase) again, and stop talking with the scammer.