I see so many jokes like this, but I'm the exact opposite. For semi formal things like contacting service providers, taxes, sales and the like I prefer to wait for 30 minutes on a phone call to writing a 5 minute email.
I get really paralized in writing something that doesn't sound casual, so I prefer to have a phone call where it's not expected that I'll speak as formally as the email I'd have to send to get the same task done.
One important thing to note here is that in my native language casual and formal written language have a bigger difference compared to English.