Today was my off day technically but because I had a big client rushing me to finish their project.…

Today was my off day technically but because I had a big client rushing me to finish their project. I worked a couple hours today. These guys had been rushing me all month. Today I got everything done and wanted them to test it out to confirm everything truly works. Come to find out the two IT guys are on vacation... And they had the nerve to set today as my deadline. I'm so pissed!!