Today and for the last couple of days, an unknown number from Melbourne (that is also NOT an unknown caller ID) has been consistently calling me on my iPhone. I've been constantly forgetting to block his number until today for some reason, my iPhone rang the number back.
To what I believed, I ignored the call (because I was busy doing something else). Then with the phone in my pocket, there was a missed call notification and when walking, the iPhone thought I swiped the notification which then rang the caller back. I didn't notice until 20 minutes later when it started playing some jingles. I hang up and immediately blocked the number, but I was worried about something.
I heard that if you ring some scam numbers, they are able to charge thousands of dollars. Can they do this to me? What should I do now? Call my telephone service provider?
Edit: I checked my call plan and it said it was unlimited, along with messaging. However, due to my lack of knowledge about my call plan and how phones work (since I'm not the one who set it up), I'm not sure If I'm safe, especially that I saw this.