11 years ago, D in my PAN turned 0. I'm still fighting lakhs in tax bill

Taxmen have been chasing me for years because of a rookie mistake by an accountant at my former employer..

Mind your Ps and Qs; we would be told as kids, meaning we should be on our best behaviour..

It all began almost a decade ago with D for Delta, the last letter, the so-called check digit, of my PAN..