Why a Random Person Sent Me Money On Cash App? The Cash app payments are quick and instant and users can not reverse those payments. But with the Cash app refund money feature they can send funds back to the sender’s accounts if the payment is made without consent or by mistake. And in case, someone has sent you money in your Cash app account accidentally then, you will have to refund that money and before refunding that money, you must make sure that the payment sent to you was not a scam. You can click on the link here to learn more on this.