State Bank Of India — Did not received IT return refund for assessment year 2010-11

Address:

Barnala, Punjab

My refund cheque has sent through refund banker SBI CMPC Mumbai on May 11, 2011 videCMPP 7305132 and Speed Post ref no EA[protected]N which has been returned back by Postal Department saying 'no such address' but my address has not changed since[protected]. Kindly look into matter and oblige me by sending my IT refund as soon as possible.Thanking You.