<human>: Can you summarize the given text in a few sentences?

This actually happened a couple months ago, but I guess I forgot to write about it. It probably wasn't that bad of a fuck up, but I still feel like a complete asshole for it.

First a little back story: A few years ago I was visiting my family in the US (I grew up and live in Brazil), a woman fighting for gay rights on the street coerced me into registering myself and to make a donation. As a bisexual, I am all for gay rights, but I've never been a big fan of people on the streets just insisting on you to register and give them money, but since I am a push-over, it was exactly what I did.
Since I live in Brazil, I just gave my grandparent's address. Which was probably not the best idea since they are kinda homophobic.

Fast forward a year or so, and I am visiting my grandparents again. I am in a hurry to go out to do something, and the phone rings for me, which is odd since I don't live there.

I picked it up and hear a very electronic voice on the other side: "Hi! We are calling you on behalf of the Gay Rights Blablabla Association to...". I really really thought it was one of those recordings, and panicked because I didn't want my grandfather to find out, so I yelled out "OH MY GOD!" and immediately hung up.

My dad, who was the one who originally picked up the phone looked at me a bit surprised and just said: "Why did you do that?" and I explained him that I didn't want them calling me there because of my grandfather and stuff and I wasn't in the mood to deal with those electronic messages. He then told me it was actually a guy named Steve. I immediately felt like a complete asshole for doing so and could never call the number back and had no idea what the association's name was. 

So I am sorry for being an asshole Steve! If you are out there reading this, I am sorry! If anyone knows a Steve working for some kind of gay association, please tell him I am sorry!

Thank you for listening!
<bot>: yelled "OH MY GOD!" and hung up on a gay's rights activist because I thought it was a recorded phone call, feel like a complete asshole for it.