Airtel — un wanted sms

Address:

Mumbai City, Maharashtra

i and my fiance have been receiving unwanted sms for last 3 months inspite of NDND activated in 2007 and updated 4 months back. am receiving sms from

TM
DM
LM

and unknown numbers like

[protected] ( msg is about winning1 crore pound in icc world cup)
[protected] (sms about shopping festival)
there are more such unknown numbers which sms about discounts in property and flats and more.

i complained in april and they asked me to update my NDND, but stil i recieved sms .than on 30th June they gave me a complaint nos asking for 15 days to resolve problem

Now after 15 days they give me a new complaint number saying that old data base is not available due to technical problem and will now take 20 days to resolve problem, new complaint number - CDRGP[protected]

how do these companies get the mobile number in first place, until and unless they are selling it to them?? all my friends who have airtel number are facing the same problem, we recieve sms at 4pm,-5pm in the mrg 12pm-1am at night

my number - [protected]
my fiance number - [protected]

stop these sms immediately

Namrata
Mumbai