How to get people to like you even more on a first encounter

Research advises that when we meet people, if we want them to like us, we need to send the right non-verbal cues and then make them feel good about themselves.
Our brains function in such a way that they constantly scan the environment for friend or foe signals. People who pose a threat give off foe cues and people who do not pose a threat give off friend cues. Therefore, when we meet people we need to make sure that we send the right non-verbal cues that signal that we are not a threat.
What would happen, however, if we first send a foe cue and soon after we send friend cue followed by making the person feel good about himself? An originally unsatisfied customer whose complaint has been handled immediately and successfully is twice as likely to spread good word-of-mouth than an originally satisfied customer. It has been proven - customers who have a problem resolved are more loyal than those who never had one. Could this mean that a person who has originally been sent a foe signal and then soon after has been made to feel good about himself would like us twice as much?