A simple "Sorry - I cannot disclose due to contract signed" should fix the issue. There isn't much the company or recruiter can say beyond this.
Think of a salary negotiation as an Enterprise Sale. Always force the other side to offer a number first and try and try and delay this until they see value in your service (i.e. after the interviews)
Think of a salary negotiation as an Enterprise Sale. Always force the other side to offer a number first and try and try and delay this until they see value in your service (i.e. after the interviews)