Individual — non activation of my pan card for e-filing of it return

Address:	Dehradun, Uttarakhand, 248001
Website:	income tax department

My PAN Card No is:-ADBPT1331K...Name is:-HARISH CHANDRA TEWARI
My DOB is :-15/08/1947.
This card has already been registered on the site of IT department and is in
active mode too.
Every time I try for its activation for the purpose of filing IT return on line,
I am given a PIN no on my mobile phone and a transaction ID no on my
email address with a suggestion to go on site"incometaxindiaefiling.gov.in/e
filing/services/DO Activate-html...and ..so on".
When I try to reach on this site it is always told that "session expired try again", or "address is wrong".
The help line no "[protected]" mostly reply "sorry network congested, all
channels are busy"and sometimes the internal links are kept hanging for a
long time.
I am a senior citizen of 70 years of age and pay most of the bills on line at ease from home and want to file the IT returns also at ease.
May I hope some quick response from your end now to make the process
convenient to me and other senior and disabled peoples also.
With humble regards...