‘More presidential’ Trump uses fake Indian accent to mock call center workers
Donald Trump speaks to supporters during a rally on April 22, 2016. (ABC News screen capture)

Less than a week before delivering a speech his campaign said would make him seem more 'presidential,' Republican front-runner Donald Trump used a fake "Indian" accent during a campaign rally on Friday, The Hill reported.

"You want to find out about your credit card -- guess what, you're talking to a person from India," Trump said during an event in Delaware. "How the hell does that work?"

Trump said he called a credit card customer service number and asked the person helping him, "Where are you from?" The real estate mogul then impersonated the accent, saying he was told, "We are from India," and punctuating the exchange by gesturing like he was hanging up.

As Reuters reported, Trump's campaign said he will deliver remarks to the National Press Club next Wednesday, which aides have said will present him in a more serious light.

His advisors have also suggested to Republican donors that he has been "playing a part" during the party primaries, and will shift tone should he win the party's presidential nomination.

Watch Trump's remarks, as posted online on Friday, below.