Income Tax Department — income tax deducted but not credited against my pan no adppb6890f

I sri nanda kumar biswas an employee of state bank of india katabagan branch. For the year 2012-13 when i was at chak islampur branch my income tax was deducted from my salary but it was not credited against my pan. After receiving the notice from income tax department i knew that tax was not credited against my pan. But sir i am an employee the responsibility of depositing the tds is only the employer. However after receiving the notice i have informed my employer. But still today they didn't take any action. So i am earnestly requesting you please you serve a notice to my employer where the money has gone. And why i will be penalized for their fault.