The open bus tour was fine, I did have to wait for 30 mints to get the red color bus other than that it was fine. I was asked for tickets to madame tussauds a london eye to purchase with them. They promised their price was the cheapest and convinced me to buy the tickets.,
Later at home I checked the price for a combi ticket for london eye and madame tussauds was 11 pounds cheaper per ticket. I paid 11 pounds more for each tickets. Total 6 tickets and paid 66 extra. I have kept the receipt with me and willing to show if required.
I was also I have priority entrace to london eye which is not true. The ticket gives me priority access to ticket que not to the london eye entrance que.