<prompt> Human: Im not trying to advertise here. Just telling you my recent experience that made me feel dumb. Long story short, my younger brother used one touch through Amazon to get one of many monthly subscriptions that Amazon offers. The price was 9.99 and had been going on for 5 months until today. He truly is younger and it was an honest mistake.I usually check my account transactions by skimming through purchases to ensure no unauthorized activity is occurring. I buy from Amazon a few times a month and just missed this certain transaction somehow. My new bank is Simple and every transaction results in me receiving a notification about it. This small feature allowed me to put a stop to that subscription and save money that was being wasted. TL;DR: Actually read your bank statementsLook at your transactions.  <response>: I set my cards to send me a text for every purchase over 0.01. Works great. 