Long Duration Packs:
As per the new TRAI policy, clause no 11 clearly states that those customers who have done recharge for their connections anually, service provider cannot change customer's package till the validity period ends. If any service provider forces the customer to change their annual packages, customer have to lodge a complaint with TRAI as well as raise complaint in various consumer forums if possible.
You may send an email in the below format. Emails IDs at the end of the post.
Subject: Please do not change my long duration plan as per directions given by TRAI to all service providers.
Customer id :
Name :
Mobile no :
As per the TRAI guidelines, I'm requesting you to not change my long duration pack till the validity expires. Below are the links to TRAI clarification on this.
Point 11. of TRAI faqs
https://channeltariff.trai.gov.in/data/FAQ_BnCS.pdf