Mint Mobile Purchase Error: Unable to Buy 5GB SIM Card Online

I have been trying to purchase a Mint Mobile 5 GB SIM card online and your system simply will not process my order. I have tried around 30 times, using different credit cards, and every single attempt ends with the same message: “We’re unable to complete your purchase. Please try again later.” No payment is processed and nothing appears on my card statements, but the order also never goes through. There is no alternative way to buy a SIM card other than online, so I am effectively blocked from using your service. Your chatbot repeatedly interrupts and does not understand the problem, and the outsourced customer service representatives I reached on the 800 number have not been able to process a payment or provide a real solution. I was even told that my phone would be reset, but that has not resolved anything. Because your system will not allow me to complete a purchase, I am being forced to consider changing service providers even though I would prefer to stay if this is fixed quickly. I request that you urgently resolve this issue, allow my SIM card purchase to be processed without errors, and provide a clear explanation of why your system is blocking my order. If necessary, I also expect you to offer a practical alternative way to complete the purchase so that I can start using Mint Mobile without further delay.