I can't order Rufftaxi without looking like an idiot

Hey folks I wanted to ask if it's possible someone help me with Rufftaxi

I live in a place a little away from Dachau hbf and when I want to order Rufftaxi to get to the station I give up half way because I can't properly articulate in German exactly where I am and where I want to go to

The lady who always picks up the phone is reasonably frustrating with me calling and hanging up hoping someone else could help

How do I make the conversation as concisely as possible to give them all the information they need to get me a Rufftaxi? I already have a Deutschlandticket so I can use the service without buying tickets