It is your responsibility to verify that you have received payment for an order and not to ship until then. It’s called managing your business effectively.

It is your responsibility to contact the vendors that process payments including your bank. Those institutions will not talk with anyone but you. If you expect others to do this for you then you are opening your business to major problems. Not keeping track of your finances opens yourself up to fraud. You know those stories about bookkeepers, etc. embezzling money. Well it happens when no one is paying attention to important details. Like your money!!!

You should not rely solely upon email notifications of orders. You need to login and check. Then you need to cross check (orders to payments).

The “I don’t have the time to check” is an extremely lame excuse. Well you’re going to be out of business soon if you don’t. If you are really too busy you need to hire someone to take care of other areas of your business.