Im having a little trouble on ups?

i tracked my order and it said that the receiver was unavailable on the 3rd attempt but the the UPS truck never came to my house and the never called or anything saying that they are here.the later on in the day itt said that they came again and they sent a postcard say to cant UPS. i am confused now because the ups never came i checked the adress that i put down to ship to and its the correct adress i checked its good somebosy please help me now. please