I have some dissatisfaction

Sir,
I have both tata Broadband (rm sridharan) and telephone line 55160093. Of late in both the above areas I have some dissatisfaction :-
1. In broadband you are not send the bill and
the rates are shooting up exhorbitantly
my last month bill is Rs.1465/-
2. In the telephone also I have requested for the instrument change which was not acceeded I have requested for modalities for surrendering.
At least on hearing this can you please tell me how to surrender both the above facilities.
Thanks and regards/RM SRIDHARAN CHENNAI