Guardian 3779
Please help with final clues
28a.Sh! The man I saw crawling around-you know...thingummy...(5,3,4) I have ??A?S ??? N?M?
18a. Care of company address for Chanel/(4) I have C???
19d. Wimbledon champ, bully gets easy money.(4,3) I have ??S? C??
25d. Said what you might find on collar of Siamese. (4) I have ?H??