Most of the mistakes I see are things like restaurants charging more than what was on the bill, and if you paid with a credit card, these are usually very easy to dispute. From actual banks, I haven't seen any problems, and yes I check whether the interest and dividend payouts are correct--they always are.
The article here is about banks defaulting customers to low-yield sweep accounts, but it doesn't look like they are actually under-paying interest. The accounts just don't pay a lot of interest. Honestly, the customer should know how much interest their sweep account pays and move that money to higher interest accounts if that's important to them. Whenever I put cash in a brokerage that I'm not going to use for a while, I always take the time to move it from the cash sweep account to an interest-bearing account. Buyer beware!
The article here is about banks defaulting customers to low-yield sweep accounts, but it doesn't look like they are actually under-paying interest. The accounts just don't pay a lot of interest. Honestly, the customer should know how much interest their sweep account pays and move that money to higher interest accounts if that's important to them. Whenever I put cash in a brokerage that I'm not going to use for a while, I always take the time to move it from the cash sweep account to an interest-bearing account. Buyer beware!