Seriously dont understand..

You know, when someone asks you to do them a favour, and after you did it, they dont trust the answer that you gave them and insist you on doing it second time? And of course, the same outcome, for the second time!! I mean i do understand you want confirmation but if after i did what you asked me to do, and gave you the answer, AND double confirmed it, just please accept the answer. I mean i seriously hate the feeling where after you asked me to do something, i gave you the right answer and there you said i'm arguing. Bah!