Vodafone India — wrong usage shows on international roaming

Address:

361005

Dear sir,

I am loyal used of vadafone for since many years.

I have activated ir plan. While in roaming, in applicable are, i have used internet. I confirmed with vodafone executive that i have used 500mb out of free 5 gb.
Vodafone has generated bill for rs. 26000 for data usage.

They deny giving detail timing and area o[censored]sage. I am still in roaming and can not use internet.

Please do needfull.