Problem with income tax calculation in online Form 11

It is now making the RTE News. A few years ago Revenue were getting awards for their software testing.

 
Appalling state of affairs, an overly convoluted tax system that cannot be easily adapted to ROS with a growing population.
 

Given that the 33% DIRT is the total tax due on the interest, why are regular PAYE people using MyAccount expected to declare deposit interest?


 
Has anyone using 'My Account' dealt with the *withholding tax*. I had 6 months with BluOr and didn't get the correct paperwork sent in enough time. 20% withholding tax applied.
Wonder has anyone dealt with that?