[ExOP1tica]

Email gives you the chance to think over your dialog. There's no guarantee you won't slip up over the phone, and remaining calm and collected.

I've never had to make a claim by phone*, I hate talking on the phone and try to avoid it when I can.

*Except for one, a few years ago on here there was a rush to SE Bose SleepBuds with a serial number replacement. Most of the dance had to be done over the phone with support because their email protocol was embarrassingly slow.