Airtel Prepaid — unwanted messages

Dear Sir
I own a AIR TEL Prepaid No [protected]. Before 1 year it was a Easy Sim (Sim by Retailer Recharge Mobile) but i converted this SIM to Lifetime SIM with recharge of Life Time Recharge Voucher. Now I cann't use any Retailer facility. I have registered my No in NDND.
AIRTEL send me promotional Messages which is sends to a Retailer. I have complaints may times to AIRTEL Customer Care. They always told it will be stopped within 24-48 Hrs. But Till now I am getting messages from from AIRTEL.

I AM OWNING AN AIRTEL NO.[protected]. AIRTEL IS CHARGING AMOUNT REGARDING POLYPHONIC RINGTONE DOWNLOADS WITHOUT ANY DOWNLOAD OR SUBSCRIPTION. I MADE COMPLAINT REGARDING THIS. BUT THE CUST SUPPORT AGENTS SAYING DIFFERENT DIFFERENT ANSWERS. BUT STILL NOT ANY STEPS TAKEN .

Yes I am also facing the same problem. My number is [protected]. Many unwanted business promotion SMS being received by me. I have already made complaints two months before but no result. Even Nodel officer of Air tel acknowledge my complaints on several instances on my repeated mails they never bother to redress the complaint. Many days i used to get a message for M-check registration which i lodged a complaint separately to stop it but in-vain. I am really fed up with the company services and seriously thinking of changing the service provider through portability.

Vijayakumar P.K.