Airtel — CHANGED THE PLAN WITHOUT MY PERMISSION

Address:

Udham Singh Nagar, Uttarakhand

Dear Sir,
i have taken the prepaid plan since 6-7 yrs and timely i have recharged but 3 days back company changed the plan with out my permission/request ,my plan was 1.2paisa/second now they are charged the rupees1/call.
i am very much disappointed from this act please advise the company to revert my deducted money and change the plan as it was earlier.
Regards
Deepak Sharma