Decathlon — bad behavior and wrong billing

Address:

Salt Lake, sector 5, Kolkata, West Bengal

We had to been to Decathelon store Salt Lake, West Bengal, India on 26.02.2019 at 6 pm and searching for a few products which we couldn't find, nowhere could we find anyone to help us for 1 and half hours.We were trying to reach a Queche bag on the top shelf which we couldn't reach but had no one to help us, when we dragged a stool and tried to climb up and reach it then people came running around. They asked as the reason and we said we couldn't find anyone for a couple of hours, then they audaciously told us that they were near the counter. When asked whether all are supposed to be there they started speaking rudely.
My query is whether an international chain employs people who behave in such a manner with the customers?
Secondly when we were going out a products product which was priced INR 299 was charged 699, when asked for clarification two persons manning the counter said 699 was the price and we asked it to be taken back, but then a third person came and clarified she had updated the system and the sell price was actually 299.