If someone already has the seed phrase to your wallet, simply abandon that wallet for ever, good as you said you don't have any intention of sending any money to that wallet again.

What I did advice you do is try to see how you can withdraw your $14 out of that wallet to a new wallet, this you can do by sending a very small amount of gas fee enough to only transfer the tokens out, if the fee remains in the wallet, then immediately transfer your tokens out before the scammer gets it first, but if the gas fee you sent was immediately moved to the scammer's wallet, then just forget about that and the $14 in it and move, and make sure not to make the same mistake that you made that handed the scammer your wallet seed phrase.