I have an application to the LinkedIn group of ex-Oracle employees. It was ignored for months and months. Finally, I wrote to one of the admins. He apologized

I have an application to the LinkedIn group of ex-Oracle employees. It was ignored for months and months. Finally, I wrote to one of the admins. He apologized and said he had a lot of groups he was admin for, and asked, now which group was I talking about, again? Does LinkedIn pay their admins? Don't know.