Time duration for documents attestation

I had sent documents of my mother and wife for attestation in china embassy New Delhi since 17-09-2015. Now it is more than 1 month my documents are still there, they said wait for call. Is there any time period for this work? I got their S1 type with in week and its expiry was on 2nd of Oct. Its already expired, that money is already wasted. What is the fun of if they give when I don't need that.