Trai — undue charges by airtel

Address:

122018

We have been using airtel mobile numbers (Post paid) and landline number since last 8-9 years. Now we visited dubai last month and never using mobile data on roaming but they are charging inr 2100 without any use.
By default mobile data are off on roaming and have been using only wi-fi on international travel but airtel customer care people are telling that we have used mobile data while on international roaming which is not true.
Now they are forcing us to pay above mentioned amount. Even we cannot change operator without paying above amount else we need to change to new number if we change operator which we don't want to do.
Please resolve they issue asap

Thanks and regards,
Rakesh
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