Sick of Uber's Constant Overcharging

I am writing to expose Uber's constant overcharging. Recently, most of the times I book an Uber with my card, they immediately charge my bank. Later on, I keep finding out that they have reversed the payment and charged a higher price. On my side, there's no change of destination or anything and it happens too many times. I think they may be luring people with lower prices to secure the sale then overcharging people to make up the shortfall. This is ********* and people should be warned of this terrible practice by Uber.