There are many people on this planet that can make you feel so small with their words.
This is why so many saying talk about what a weapon a tongue is.
I'd ask my employer what you're allowed to do if this should ever happen again.
Many offices allow the "I have a call on the other line, one minute sir" then put them on hold,
give them one or two minutes and come back, thank you for holding and as soon as they go into a tyrate again, One moment please sir, I have another call.
Another tactic is, 'One moment while I put you on speaker phone so both myself and my supervisor can help you.'
Other companies will allow you to tell the person politely, they are out of line and they need to call back when they are calmer. Another tactic I find that totally defuses people is a very loving, kind and surprised voice saying,
"OH MY GOODNESS, You poor thing, (or you poor soul) you just sound like you've had an awful day!!!!!"
It kind of makes them step back in shock that someone cares, they realize they're taking it out on you and they back off.
I like the hold suggestion best, gets you off the phone so you don't have to listen to it, and either calms them down or ticks them off more
If you're a sister, maybe it was a combination of this mans bad manors and your hormones, and maybe this particular day it just got to you more than usual? I know just before a 'monthly' or during I take things to personal and the tears flow.
Either way don't let this brother (or anyone else) steal your joy, or anyone else for that matter.
But you can also say a quick prayer asking Allah to forgive them and help them for what makes them angery or rude.
And remember, we all need to remember sometimes people vent and we have no idea what kind of day they've had before calling our offices.