Reg: itr hard copy sent to income tax dept

Hi My PAN Card No: DFHPS0523F and i have filled ITR on Taxsmile and ITR - 2A hard copy is sent to bangalore Income Tax Office On 20th Aug'15 and i have not received confirmation message from them but my collegues who have submitted it along with me and sent to tax office on same time - they have received sms confirmation.

Address 
Income Tax Department - CPC, 
Post Bag No – 1, 
Electronic City Post Office, 
Bangalore - 560100, 
Karnataka 

Please suggest so as what to do next.

Regards
Shrikanth 9966999896