If you do not clearly hear what another person said, you can say "Excuse me" or "Pardon me" to ask them to repeat it politely.
But if you still don't get it, what should you say to ask them to repeat it again? Will a native speaker consider it rude?
Learn English – How to politely ask someone to repeat what they said after they’ve already repeated it once
phrase-requestpoliteness
Best Answer
Most native speakers of English will only ask for a repeat once or twice, and after that will pretend they understood, so as not to appear rude. I don't mind if people ask me more than twice, but from observing people - twice seems to be a social norm.
I would usually say:
Remember that it takes a fair bit of skill to say "What?" without sounding rude, so if you are worried about sounding rude, don't use "What?" and don't forget to add please and thank you. Native speakers, however, will often just say "What?".
If you are asking a second time you can add "still" or some other modifier:
When asking multiple times "What?" sounds rude very quickly.