they get angry so quickly and the number is still active as of now
Ah, Travelation. These guys had over 130,000 calls on BobRTC last time I checked. Check out their reviews on Tripadvisor.
Haha Impossible to do anything with them because it goes into their IVR and it rotates the extension on each call.
Not if your robodialler can use speech recognition to defeat their IVR system.
they are quite angry
That might be because of this.
Wait a minute, no it’s not. They’ve just blocked the SIP trunk provider I was using to terrorise them. Shame I’ve got a bunch more to use