My FH and I are getting married this fall and we have invited one guest that I am biologically related to in the area. We sent Him and his wife a formal invitation. I just received a text message today from them saying that they would definitely be at the wedding. HOWEVER he invited the whole biological family to our wedding. He said they would all be there and I explained it was invitation only and asked if he had given them the date and address. He is not responding and I don't talk to these people. What should we do? These people are not welcome. He invited them, we did not. What to do with 9 uninvited guests?