‘Passive-aggressive behavior is a pattern of indirectly expressing negative feelings instead of openly addressing them. There’s a disconnect between what a passive-aggressive person says and what he or she does.
‘For example, a passive-aggressive person might appear to agree — perhaps even enthusiastically — with another person’s request. Rather than complying with the request, however, he or she might express anger or resentment by failing to follow through or missing deadlines.’
Source: Mayo Clinic: https://www.mayoclinic.org/healthy-lifestyle/adult-health/expert-answers/passive-aggressive-behavior/faq-20057901
Pro tip: Know someone like this? Best to walk away.