I was scrolling up on my phone and it bidded a bronze player that was 150 coins. For 10,000 coins.

I am sure many people hard thought their coins thru hours of play. But how can players claim their coins back?

I know there's a solution for players who sold their players accidentally to buy it back. 

Or at least a warning to say are you sure you want to go ahead. To press it twice? It's no good if it buys players when you are scrolling.