India Post — Article stuck at Mumbai AP Inland TMO office

One of my packages has been stuck in Mumbai AP inland office and it is not moving since 10 days. It has reached the Mumbai office on[protected] and it is minor moving since then.
None of the India post offices are even able to do anything about it. My customer has been complaining and I’m not able to do anything about it. There is no means to reach the office too, their contact no is not working.

It’s such a loss to small business when this happens. How can India post be so irresponsible