Does she keep unblocking my number?

I keep ringing my ex, though I know she has me on block, so it never goes through. I think she blocked me through iphone and not her service provider. Sometimes, when I call, i keeps ringing. Does it mean she has unblocked me or has the phone done it automatically?

I'm trying not to contact her, so the block was good. But I think she unblocked me twice.

I guess she just blocked and unblocked you