my ford fiesta 1.3 1998 is turnining over but not starting?

my car is turning over but not starting
took it to a garage apparently they changed the fuel pump, drove it for a day and it broke down again.
took it back they said it was the relay... they fixed it... broke dwn the next day. now it is doing exactly the same turning over but not starting... not sure what to do?

any ideas welcome pleasw