She hasn't called/ hasn't been calling me yet. We haven't heard/ We haven't been hearing any news about it recently. I didn't see/ I haven't seen them since the party. She's been…

Sure! Here’s some clarification on the sentences you provided with the correct usage of verb tenses:

1. She hasn't called me yet. (This implies that up to now, she has not made a call.)
2. We haven't heard any news about it recently. (This indicates that there has been no news received up to the present time.)
3. I haven't seen them since the party. (This suggests that the last time you saw them was at the party, and since then, you have not seen them.)
4. She's called the bank about twenty times but had no answer. (This uses the present perfect tense for the repeated action and the past perfect tense indicating that she received no answer at the time of calling.)

Would you like to go over more examples or clarify any specific tense usage?