First, physical diseases, such as nasal congestion, or other diseases that affect the ears, just find a doctor with morality and experience.
Second, karma may be a problem from childhood, or it can't be cured after seeing many doctors. Then the method is very simple. Make an oath to read the Buddha Sakyamuni for a thousand times and return it to your unjust creditor. The key is to be sincere and face it with sincere repentance, so that we can have real feelings and solve problems!
amitabha