Reliance Communications — Wrong bill made and assured it will be rectified as soon as possible but now denies.

Address:

New Delhi, Delhi, 110088

Hello,
Here are the details of complaints

Mobile no: [protected]
Company name: reliance communications
Description: i am a loyal customer of reliance since long.
I was converted from cdma to 4g gsm on 30th may 2016 and i was told that i can use 10 gb since then till 4th july 2016. i inquired same several times from the outlet to customer care.
Today my bill generated and i was shocked to see amount. my bill since many years was in between 300 -550 and not above but this time it was 1100 above.
To my shock my data which was promotional offer was charged.
I called delhi reliance appellate authority. at first they held up my call for 10 minutes and disconnected. i called again and a lady spoke to me and she denied that there is no such offer for now.
I told her that i was told by outlet and customer care, she asked me their numbers.
I personally went to outlet and told them. they still say that they were told it is not chargeable.
Name of outlet: perfect infocom
Phone:
[protected], [protected]
Then i called customer care and they also said it is not chargeable and told me that i have 100 mb more to use but i have used data as my bill is already inflated.
How these people cheat, their customer care speaks something else and they charge us for promotional offers.
Besides i was assured that these charges will be waived off within 2 -3 days and on 11th it will be settled but today customer care called and denied and misbehaved by disconnecting call.