She says I'm acting strange? Why?

So there is this girl I asked her to call me to explain what happened to something she was asking me a ton of questions about. So I said I can explain what happened over the phone. I asked her to call me after she gets out of work. She says ok, about 3 hours pass and I see she has been online the whole time. So I sent her a message and said, "Hey you know what forget it, I'm retracting the offer =)" She immediately responds and says sorry I was busy but sorry thank you. About an hour later or she makes it so i can't see her profile pic or when she sees my messages, and hides her Status, this is on whatsapp. A week goes by and she reaches out to my friend saying I haven't talked to me because he's been acting strange. It's been a month now since this happened. She hasn't blocked me, my messages go through, but doesn't respond. What happened?

She says I'm acting strange? Why?
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