I signed up for 5 lines for $90 promotion. Part of the promotion was to receive a $400 Visa prepaid card. I verified the promotion on the phone when I ordered in July 2017. I made sure the promotion was validated at sprint.com/verify. I have the hard copy of the promotion along with my original order. I was told it would take a few months to receive.
A month later, I called and no one at Sprint had any clue about a promotion. I escalated and finally had a supervisor come on the line who verified the promotion and said it would take a few months.
3.5 months later, I called Sprint and was told the Visa card was sent. And it was for $100. When I told Sprint that I hadn't received it and it was for the wrong amount, I was told that maybe the card was sent to a local Sprint store if I wasn't at home when it was delivered. The "Visa card department" would call local Sprint stores and ask if they received it. I was given a case number and a "Visa card department" phone number. I called the phone number and it is a scam line that tries to sell cruises, etc.
Fortunately, there are laws against false advertising and governmental organizations that investigate fraud. I can't waste any more time with calls to Sprint.