Bharat Sanchar Nigam [BSNL] — Changed my LandLine number[protected] with out my approval

Address:

BSNL Santhosh Nagar branch

Hi,
This is to inform you that BSNL cheated by changing my LandLine number without my approval.
I am having the BSNL FTTH Connection with the number[protected] from the past five years. Last month there was a net work problem. They had not shown interest in tweaking the problem.
I was with out my Landline and internet for more than 15 days. Then after multiple complaints they asked me to change the router and they had also changed the router and they forced me to take the new number and assured your number will be back after a week.
I had to pay Rs3200 extra for the router again
But when i reached to the office for the my previous number they are not responding. I reached to the multiple times for the sake of this but no one responding.
I have been using this number from the last five years and this is mainly for my parents that they can easily access the telephone rather than mobile.

And more over this number is spread all of our family and friends and i cannot change it now.

I want my number to be back Please help in resolving the issue ASAP.

Thanks,
Mahendra Nath
[protected].