Promotions and rebates

So my sister signed up with T-Mobile internet and was told she'd get a $200 prepaid Mastercard, and then the rep said he'd throw in $150 of Instacart. Well, she went to go submit them, and the Instacart promo didn't work. A call was made to T-Mobile to see why, and they advised her it was because that promo had expired and should never have been offered, so they compensated her with another prepaid card. Well, when she went to redeem that, it went through fine. However, when it was past the timeframe to be sent to her, she called in, and they said she would only get one of the cards because it was a duplicate submission according to them. Mind you, when she was told she'd get both, she asked if they'd be there before Christmas, and they promised her they would, so she planned on using those cards for her kids' Christmas gifts and didn't budget any of her money to get them gifts. Well, the cards ended up NOT showing up, and she was eventually mailed a check at the beginning of the year, but she wasn't able to get her kids anything except for what Angel Tree gave her for them, and some of the kids are too old to qualify for Angel Tree. It was a disaster and such a failure on T-Mobile's part, and nobody acted in the least bit like they even gave a crap. Long story short, there's a 50/50 chance you'll get this if you qualify.