Google is a search engine, not a source. It can lead to sources that appear on different points of the spectrum in terms of reliability.
This article only makes the claim that in an interview Madonna claims to have been excommunicated 3 times. There is no quotation given of Madonna’s comments here. No specifics are given. No “high ranking people within the Catholic Church” are named.
Maybe it’s true. Maybe it’s not. There is nothing in the article that would lead me to believe that it is certainly true. And there is no evidence that high ranking Church officials are clamoring for her excommunication.
Frankly, it’s between Madonna and her bishop. If a bishop were to formally excommunicate her, he would do so under conditions outlined in Canon Law. So, yes, he would have a right to do that (presuming he was following Canon Law). Did any bishop do that? It’s impossible for us to know, and we don’t really need to know.