TATA DOCOMO failing to provide GPRS service

Location/place: Ahmedabad

Name of company/service: TATA DOCOMO

I, Siddhesh Nar, living in Ahmedabad have been using TATA DOCOMO number 9033222210 as a service provider for my cell phone.
I have a postpaid connection of the same. I want to use internet facility in my phone NOKIA 7210 Supernova. I have been using internet in this phone through Vodaphone since last two years. But I can’t access internet through TATA DOCOMO. Every time I get packet data connection not available error message. I have been complaining about the same to TATA DOCOMO since last one month.
the customer care executive every time misguides me.
I logged almost 5 complains in the company but till date no action has been taken by the company. Whenever I file a complaint, they assure me that they will look after my problem but they never do the necessary action. The docket number and the complain details are as follows:-
1) On 16 july, 2012 the docket number – 317910839
2) On 18 july, 2012 the docket number- 318222601
3) On 6 august, 2012 the docket number- 321058935
4) On 6 august, 2012 the docket number- 321058935
5) On 9 august, 2012 the docket number- 321519089
I had the GPRS pack activated but I cant use internet. The company is failing to solve my problem.
costumer care executives cannot do anything other than taking a complaint. But the complaint never gets solved.
SIDDHESH NAR
9033222210