I don't think it will be a big tax amount on a 2007 transfer? Maybe i am wrong.
I have a claim of rs28000 pending since 2011 and never got return. Its not something easy to get back when amounts are small ( bigger amounts mean u can easily bribe from that amount and people do get claims in that case ). The only way is that you ask your company to adjust it in your salary. Once the money is gone to government means its gone 