false talk

Hello,

We brought in tata docomo 3g wifi donagal frist time company executive says his 3g wifi speed in our location 680kbps but we have not received 320kbps speed i am many time talking talk with company with regard not proper speed. but company are not respond to me.we have vary tired and we are closed this wifi no. and not deposit half bill for half service but company are sent to us a lagal notice.
kindly talk action this company because company gives a wrong informantion