BSNL — Very Slow Internet Connection

Address:

Hooghly, West Bengal

I purchase BSNL CDMA Data Card PCMCIA Type (WB & CTD) on 2007. Speed of line is 256 kbps I am using it only for gathering information from Internet but now a days the Internet connection slower and slower google page open about 1 minute. But BSNL send me the bill Rs. 225/- properly but they did not repaired the problem.