When people get angry or frustrated when you tell them that you didn't hear them, even when they know you are hard of hearing, it could be due to several reasons:
Misunderstanding: They might not fully understand the extent of your hearing loss and expect you to hear them better than you actually can. They may assume that since you heard them before in certain situations, you should be able to hear them in all situations.
Impatience: In today's fast-paced world, people often expect immediate responses, and when they have to repeat themselves, it can lead to impatience or annoyance.
Repeating themselves: People might feel annoyed at the inconvenience of having to repeat themselves, especially if it happens frequently.
Feeling ignored or dismissed: Some individuals may perceive your difficulty in hearing as a lack of interest or attention, which can make them feel unimportant or undervalued.
Communication barriers: Miscommunication or difficulties in relaying information effectively can lead to frustration on both sides.
Personal frustration: It's possible that the person is already having a bad day or dealing with stress, and repeating themselves might add to their overall frustration.
Lack of empathy: While they might know about your hearing impairment, they might not fully empathize with the challenges you face on a daily basis, leading to a lack of patience.
Social norms and expectations: Society often expects people to be able to hear and respond without difficulty, and your hearing impairment might challenge those norms, leading to discomfort or frustration in some individuals.
Overall, these reactions are not necessarily justified, but they stem from various underlying psychological and social factors. It's essential for both parties to practice understanding, empathy, and effective communication to foster better interactions and reduce unnecessary frustrations. Additionally, educating others about your hearing impairment and the best ways to communicate with you can be helpful in improving overall interactions.