Tata Docomo — 250 net plan,balance deduction

sir,
I have activated RC250 on 25April (at 2:21 pm approx)on my number [protected].
on this day the net is superb,but next day I got a text "3G plan is deactivated"on 27 april, and I
also lost getting data of RC250 plan.
Now, whenever I connect using TATA.DOCOMO.INTERNETHVC , I get
connected, but there is no data being received.
i called docomo care every day till now,
they told me that there is problem in some number regarding 250 plan.
i m fed up by calling docomo care,
they all have there different rply for my complain.
now on 29 april,i changed my access point,
TATA.DOCOMO.INTERNET ,
and i m surprice bcs net is connected,
but for this i have charged 12 rs .
i again called docomo care but all is vain.
i think docomo cheats its custmer by changed access point.
In last 5 month every time i recharged 250 plan,
and there is a balance deduction issue and i have to waist my time by calling docomo care which all takes it as a fun of there daily routine even there senior officer also,
i m very fed up by docomo service,
and port my number,
after the expiration of the net pack,which is not connected through net.

so please sir take an action rrgarding my cimplain,
and credit my balance again,
and solve the problem of internet also as soon as possible,
becaus my 4day out off 28days gone waist .