My job is fucking me over!!!!!

I was laid off due to covid-19. I’ve worked for them for 6 years. I get a call to come back and I had questions to ask. Because I know how much of an asshole they can be. I had requested 5/22 and 5/26 off prior to this happening. I was asked to come back 5/20 and I asked that I had requested time off and was told that I have no vacation time. Once I go back to work I will be a NEW HIRE and have no vacation or sick time I would have to accrued it. I’m blown away. I know they can be low but never thought they can go this low. They want me back full time but they will only be working 2 days per week and want me at the office all five days. I’m so hurt!!!