Payment Notifications - DONT WORK

Payment Notifications - DONT WORK

How come we get NO notifications on this out of the box?  The most important thing in ANY business. Yea I see the alert when I click on the top right notification's icon inside books or the books app.  BUT THATS IT.  

Just emailed a client saying when we can expect payment (since its past due for over a 2 weeks).  He reply's back saying "Umm we sent the payment 3 days ago.  Did you did not receive it. " So embarrassing 

How Can I get real time alerts to my phone and to my email ??  Once a payment is made this should happen in real time.  A text message saying it was paid, also a email saying the same.   
The iPhone alerts dont even work.  The books app is setup for notifications and I get nothing