What is the easiest way to buy Bitcoin with a credit or debit card?

Using CoinBase has become impossible, and following this question about CoinBase alternatives I have basically signed up to every single one over the past few days and despite my every effort I still can't buy bitcoin from any of them with the exception of inputting my bank login credentials into one of them (which is not going to happen). What is the absolute easiest way to buy bitcoin with a credit or debit card?