Spam Caller and bad attitude

I received multiple calls (one after the other) from the following number: ********** 661 to my mobile phone on Tuesday 29.08.2017 @ 11:06. I was busy on a call at the time and as I rejected the call, my mobile started ringing again. The calls came through in such rapid succession that i had to end my current call to attend to the incoming calls to my mobile. This happened between 5 and 10 times over.

When I returned the missed call, a very belligerent person answered the phone. When I asked why they are spamming my phone with calls, the person immediately got offensive and challenged me to report BuzzBlock for their unacceptable behavior if I were so inclined.

Surely this is not the appropriate decorum for a company dealing primarily with people?

Rest assure. I will never use this company for my corporate's recruiting needs.