third party purchase limit increase

You can't, they will not allow it. I suspect that most of their customer service policies are from Sprint when they bought Sprint because I've had more problems with T-Mobile and billing and not releasing the third party cap or not resetting when my cycle is reset that I have to contact someone every single month and they give me the same runaround of oh well it's resets specific standard time we're sorry you live in a different time zone oh we're not going to increase or remove that cap because we don't give a f***.