BSNL [protected] — deactivate voice chat service

Address:

Balrampur, Uttar Pradesh

my mobile no is [protected] and somehow a voice chat service is activated on this SIM CARD and now it's not getting deactivated.They just cut 30rupees per month from mobile balance.They are giving a number 12630035,but it's only for activation and rules for the service in which i'm not interested.
Therefore kindly deactivate this service from the user no.[protected].(as soon as possible)

reguards

consumer no.[protected]
[protected]@gmail.com