Why “WAST”, instead of “WASTE”? Has watched a film “In time”. At a window an inscription “Don’t wast my time” Why the word “wast”, instead of “waste” is used?

First notebook entry: Introducing myself Hello) My name is Elena. I am from Russia. I am a five - year student of the Siberian State Academy of Geodesy. I live in a hostel. I like to spend time with friends,to walk, to look films at a cinema, to listen to music, which is pleasant to me, to read interesting books. I the complicated, but interesting person. Such as fluffy hedgehog. As I wrote in a note - I nervous, times very constraining; sensitive and very trusting; I feel sharply, live as I consider it necessary. I study English language because it is universal language on which it is possible to talk almost all over the world.