Call them, and tell them to get some fresh sensors in right now...and call you...
then, when you walk in, punch the tech dude in his snout, tell him to install and program a new PAIR of sensors now, and walk into the owner of the dealership and have a nice sit down conversation with him.. be very nice to the owner, and ask him to INSURE this won't happen again...
then, wait. but hopefully during your conversation, you make the point that this is not a week long event, to place you without a bike for anything more than an hours work... if his tech is doing his job.
when I dropped mine off, for retrofit, under extended KPP, at 8 a.m., I got a call back at 9:45, telling me I could pick my bike up anytime... all complete.