MTS Data Card — Speed issue and customer care not respond

Address:

New Delhi, Delhi, 110059

Sir, I would like to inform that i have complaint to CS on 2nd day of activation of data card-MTS that there is connectivity issue and I am not getting speed as you have convinced me to purchase. I have sent several mails to customer care for site survey or to refund my hard earn money back against the dongle which is useless but customer care is not responding positively
My data card no.[protected]
my phone no. [protected]