Incompetent doctor don't know how to prescribe Seretide

I don't know what's wrong with this doctor! No wonder noone sees her. She works in a medical centre. Today there's 3 doctors on. The 2 male doctors have 10 patients in the queue waiting to see them, whereas this lady doctor only has 1. Not a very popular doctor, which is expected, considering all the mistakes she makes in her practice! 

A young girl comes in with a script for Seretide 50/25 Inhaler. I look on her medical history, she's usually on the Seretide 250/50 Accuhaler. So I ask her, is she after the Accuhaler coz the doctor's written her a different one. She confirms by showing me an old device of the Seretide 250/50 Accuhaler. I tell her to go back to the doctor and get it changed coz the doctor's written the wrong one.

She comes back later with a script for: Seretide 250/25 Inhaler. which is NOT what she wanted.

I tell her again, that the doctor has written her the wrong one again. Getting a bit frustrated here. Both of us are like WTF is wrong with this doctor. I teach her she needs to check the script when the doctor gives it to her that it must write ACCUHALER and the dose is 250/50, otherwise she is going to have to go to the doctor again. 

Third time lucky, she gets it fixed up and comes with a script for Seretide 250/50 Accuhaler! Yay! The patient was a bit worried, kept on asking me if this is the right one. 

Seriously, this is poor practice. The doctor is not busy, she doesn't have a long queue, and she can't even do a simple thing, can't even prescribe properly even if the patient shows her the product itself. How hard can it be? 

And the fact that I have to teach the patient to double-check the doctor's work is just appalling.......