World Cup train

Hi!
Anyone familiar with the app and how the World Cup tickets work can help me out?
I just tried to buy a train ticket for the game tomorrow but every time I entered my info, it told me there was an error in processing my payment.
After 4 tries I gave up and decided on driving there.
The issue is that 10 minutes later I receive a notification from my bank telling me that 4 payments fro MBTA just went through…
I checked my bank, the payment went through (4 times) but I don’t see the tickets in the app for some reason.
Also how would I go about getting a refund?l for the three extra tickets😭

Thanks!!