Horrible service

Ordered and paid for internet to be installed LAST WEEK ALREADY- guys pitch Saturday without informing me - also don't bring enough cabling - come again today - won't install because the "line" is in the neighbors yard, Said its my problem to get it sorted ??? Very poor service - how do I cancel my order ??? If I have to do it myself why do I have to Pay for it to be sorted ??? Why say you have a line at my address if you do not ???????