India Post — letter not delivered and can't even track where it is.

Address:

147001

I posted a letter (Rp[protected]in) from head po - patiala, punjab to peterborough, on, canada on 8th of april which has not delivered yet and the tracking information shows the item is bagged at delhi international mail centre on 9th of april and it still shows the same thing on 1st of may. I called customer helpline they asked to contact canada post, my brother contacted canada post they said we have no information regarding your consignment number. I have registered a complaint on india post's website but they guys don't even respond. I am really worried and frustrated.

If you can't deliver it, at least send it back it is really important.