sir me 4 month se bsnl ko complente kar raha hu ki mere data card me speed nahi milti hai or customer care wale complaint number dete hai or service centre par jane ko bolte hai or vaha se har baar bol diya jata hai ki aapka evdo card sahi hai or network nahi aata hai waha par ya to do network aa rahe hai isiliye speed nahi de raha hai or pahle speed 2mb/s chalti thi ab to bahut hi slow ho gayi hai