If that doesn't help, then open a new card and link the payment to it. After that, I already in my office attached it to the amount from the new vendor. Perhaps you will also need the help of a wealth management advisor. Specialists should know how to transfer such payments and attach invoices. Personally, I turned to them when I needed to figure out how to set aside my capital so that I would always have a good percentage left over. But I think they can help in your situation as well.