I phoned back and got a message the number has been disconnected.
This person is relentless and keeps phoning under similar numbers listed here below
0436 257 384 0436 257 261 0436 257 256

Caller: ‭0436 257 234‬

This guy called me asking about electricity, then hung up, and when I tried calling back, it disconnected

Called Back and said number was disconnected

I keep getting calls from similar mobile numbers, all are disconnected if i try and ring back, i have answered once and didnt say anything and neither did the person who rang. numbers include:
0436 254 874
0436 254 981
0436 254 971
0436 254 549
0436 254 834
0436 257 349

i keep blocking all these numbers and they keep ringing on similar ones

I called back number 0436 257 256 rang once then gets disconnected automatically.