Can the intermediary give him the verification code?

The intermediary company must not give you the verification code, because now you have no idea what the intermediary company wants you to do with this verification code. Maybe before this, you have been to some intermediary companies to understand the situation. No matter what kind of intermediary company you are looking for, they may keep your mobile phone number. But after they keep your mobile phone number, they want to register some other accounts with your mobile phone. They will send the verification code when they register to your mobile phone, so he will ask you for this verification code, so you can't give it to him.