From what I've read, the full stop cuts off communication in text and calls, as well as saying "sorry, I've been busy" when asked about this cut off of communication in person.

My question is: How limited should communication in-person be? Also, if the target says she's annoyed/angry or whatever, should you respond with a shit-test answer, or use the same "sorry, I've been busy" line until you end the full stop?