DATA CARD service provider not giving service properly and not solving the issue.

Respected Sir,
I have purchased Reliance NETCONNECT+ datacard with Scheme of 3 months unlimited data in Rs.1100 on 20th january 2015.
But the Service stopped within one month only.
I had registered the complaint with the reliance customer care executives several times, but they say that a technical call will be arranged and no call is arranged till date.
Till now I have called them 10-15 times and registered the complaint 2 times but the issue is not being solved.
the complaint nos. registered are 230731213 and 230888268.

Contact No. 8805379793 / 83900907105

Data Card Details:
Reliance Netconnect+
RSN: RHWCDM210009677
MDN: 9370710464