What should I do if I am completely rejected by a girl, don't send text messages or make phone calls, and then find her, harass her and ask for help? I like her very much.

Since she told you not to look for her, you should stop for a while and leave her alone. Just show up when she is in trouble. From your description, I think you sent all the gifts to her unit, and she might be laughed at by her colleagues in the unit or something. Originally, she is very homely. After all this, she must be more timid (but these are just my guesses). Hehe, people who live in houses are very heartless. If you really want to be good with her, then love for a long time, because such love is a natural thing for people living in the house.