It could be done faster and doesn't really require skilled labor. I'm getting $350-500 day rates on a mini excavator (assume double for a delivery now, now, NOW!), $1,500 gets a gas powered Hilti saw to chop the basement wall (easily sold for $1k when the job's done), and that liner is just a 3/4 cut culvert. The only place concrete would be needed is sealing the bottom. Slap some cheap metal roofing above and you're not having to worry about sump/drainage. If they'd put the effort in to start in earnest yesterday, they could be squared away to remove that red tag Monday.