I’ve got a pre-paid BT Mastercard with some cash on it and want to use as part-payment of an online order. But I’m worried what will happen if I type in the card details. Will it try and take the whole amount from this card? Will I suddenly be in debt on this credit card?
The card doesn’t have enough on it to cover this cost and I want to pay the rest with my debit card as normal. How can I make that happen?