For the past two years, I have tried to file my taxes with TurboTax and I get all the way to the end and I get an error saying "your transmission didn't go through." Help

I get a message that says: "We could not e-file your return for the following reason:
A server problem occurred while processing the refund transfer. Please try to e-file again and if that fails contact customer service." What am I doing wrong? I am now two years behind on my taxes and I don't know how to fix this.