I was promised a third line for free and didn't receive it.

After being with Sprint since 1996 I was very reluctant to change but they made it seem like we had no option. Since day one I have bought or paid my phone off in advance with each upgrade. I have never financed a phone. They had been sending me emails and advertising for months that I would get a free 12 or 13 with an upgrade on at least one of my lines. I opted for the 12. The salesperson transferred everything over and when I checked my phone I noticed all of my apps and data weren't downloading and a warning message popped up that I was almost out of storage. I addressed the issue with her and I was informed she had upgraded my I8 128gb for a I12 64gb even though there are two options with that phone. She told me I would have to return and upgrade to a I13 and pay more money in order to get 128gb. So manipulative! Why would I want to upgrade from a 128 to a 64?  Oh and btw the 3rd line isn't actually free so your bill will be higher than what they tell you guaranteed! And no free Hulu and free Netflix is only for basic 1 screen.