OK, instruct the broker to move your shares from the Margin account to the Cash account.
50 years ago if a security was on the cash side, the broker could not loan the shares to any firm for any reason
If its in a margin account, they can.
I hope you have zero debit balance
that's investor rule #1; never borrow on stock, NEVER
If you do your account is vulnerable to a short attack. You get a killer margin call. I have seen it all, don't use margin. Repeat