SBI Saving A / C — CHEQUE CLEARANCE

Dear Sir
i have deposited Rs. 50600 cheque dated on 6/10/2008 in Himatnagar branch. but it is not cleared in 15 days. when enquired in bank, replied was it will take app. 30 days.
but it is not cleared till now ((after 40 days).
now nobody is listining in bank.
please suggest me what to do.
Sanjiv Gupta
Vadodara (Gujrat)