$540 via promo credit when you add a new smartphone line with your own 4G/5G smartphone on postpaid Unlimited Plus plan between 5/18/23 - 5/31/23 & port-in req'd. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
I just posted about how upset I was that I got charged $10 for bringing my DVR box back to the FIOS kiosk in my mall. However, the good thing is, they gave me a receipt with my serial number, the charge, etc., which is the proof I wanted in case there was an issue. Not sure how you returned it, but that was one reason I did not send it back via UPS.