You talk of "the person" who caused the problem.
Then you start using the plural pronoun "they" to say "they" are ignoring you.
So the only general advice I can give you is to give things a few days to settle down and see what happens.
Generally, no one can hurt you unless you allow them to. Of course, in close relationships is is normal to be more vulnerable to what the other person is doing, but iit's hard to maintain a relationship if you are constantly being hurt by the other person.