Press one for yes if you or someone in your household is fifty years of age or older. Otherwise, press pound. Again, press one now if you or someone in your household is fifty years of age or older."
I wouldn't recommend using this phone number to call Sprint, because it appears to be an old number or a fax number of some sort. No one will answer regardless of what time of day you call: it will just continue to ring.
At first, I thought that something was wrong with my phone, but then I called a different number and it worked fine. That makes me believe that this simply isn't a functional phone number for customer service. I went online though and found another number, 1-800-927-2199, and that worked fairly well.
Outside of being surprised by the fact that T-Mobile now owns Sprint, I was able to get through the phone call fairly quickly. It wouldn't recognize my phone number, which was a weird glitch in the system and something of a pain, but I was still able to eventually get to a customer service agent. There was hardly a wait time either once I got to that point, and given the fact that people could need to call Sprint for hundreds of reasons, the very short wait time was actually very much appreciated by me.
When I called, it said: "Welcome to Sprint, now owned by T-Mobile." It then ran through the standard privacy message and also offered a Spanish option. Next, it asked me to enter my ten-digit phone number beginning with the area code. I did this twice and both times I had no luck, but then the system seemed to ignore me and just moved on in the process.
It went straight to a list of options: "For billing and payments, press 1. For account changes, phone upgrades, or swaps press 2. Technical support press 3. More options, press 0." I chose account changes and it gave me a new set of options which included: "To swap or upgrade a phone, press 1. Minutes used plan information, press 2. For payment issues, press 3. Plan changes, press 4. To disconnect the service, press 5. To speak to a premier care representative, press 0."
This phase proved interesting, because I took a second to think about what option I wanted and then, unprompted, it automatically took me straight to a representative without any wait time at all. So my advice to anyone calling is simply don't choose an option and let it send you to a customer representative.
Whether this feature is a glitch or incorporated by design, it's definitely helpful. The representative communicated clearly and easily helped answer my questions and locate my account. It's just a pity that the apparently defunct 800-808-1336 phone number doesn't simply forward to the far more helpful alternative I was able to find online.