Vodafone India — international roaming charges!!

Address:	411001
Website:	www.vodafone.in/discover/roaming/international-roaming-packs

Vodafone advertises Rs 180/ day on international roaming in their posters, I accepted Rs 500/ day for travel to Dubai and then theycharge me Rs 10, 000 for one day!!!
I had asked for the IR pack of Rs 500/day to be activated on the 6th of August. When this was not done in one week - I walked in to their Kalyani nagar branch in Pune and asked it to be activated immediately and the person at the counter told me that it was done.
Why then are they charging me more than Rs 500/ day?
My international roaming pack was supposed to be activated on the 14th of August and my bill must be recomputed based on activation on this date.