Airtel
Getting sales Call after registery in DND

I am using airtel mobile (9810633351) and registered in DND for last 7 month .but still i am getting sales call on same number.today i have got irritate with call from

0124-3992900

0124-3983501

0124-2350176

0124-2350175

0124-4367606

0124-3983720

all of above numbers of same company .on one call i have said dont call me.this is wrong number but you can see how many times i have got call from there in same days.

please do the needful.

Regards,

Avinash