My friend told my business at work and she thinks it's funny. what do ido?

i block her number so i won't get any phine calls from her. i text her to tell her why i was upset. she text me back to tell me that ppl were not supposed to know what she was talking about unless i explained things to them. she thought it was funny to act that way. i was hoping for appology but nothing. she tried to blame me for something i did not do. i did not even know why she would do something like that. the funny things are i know stuff about her that are outrageous... do i do the same thing she did? she is not a little angel you know?