There will be times where I will not answer a call or IM from someone not in my contacts. I am not at the beck and call of people I know, so why should I be at beck and call with people I don’t know? With that said, if you reached out to me, and I don’t know – do not expect immediate replies. Have patience, and I might return the communication request. If I suspect that you might be a scammer, then I will not reply.