Way too easy to make purchases on accident.

I was checking the shop today and looking at some of the bundles looking for things to spend my San Van bucks on. When looking at the girl bundle I tried to go back to the shop but accidentally clicked the purchase option (WHICH IS RIGHT ABOVE THE BACK BUTTON FOR SOME REASON) (THIS REALLY NEEDS TO CHANGE) and it purchased the bundle for me. When using kbm I know that to purchace a bundle you have to HOLD the purchase button. I did NOT hold down my spacebar and I did NOT hold down on the purchase button. I was trying to click the back button and accidentally clicked the buy option, keywork CLICKED not HELD. Its a shame because I like this game and was excited to use my San Van bucks elsewhere but this bundle isnt my style. If there is going to be an option to buy items with currency obtained with REAL money there NEEDS to be a refund or return option in case of accidents like my situation. Im a little worried about buying more San Van bucks if it is this easy to accidentally make permanent purchases.