The trick with indicating a bank card when registering in an online service and the imposed auto-debit option - how to avoid wasting funds?

Question

Information Security

There is an online service and in order to use the free demo period, test the functions, you need to provide the card number and CVC code. For this, the service promises to open all functions within a month at a price of 1 ruble, and then the monthly subscription fee will be ~ 2,500 rubles. At the same time, on the page for entering data from the card, by default, a checkmark is marked next to the inscription "By paying here, you allow auto-debit".

So, I want to use the demo period, but I categorically do not want to indicate data from the card in this service and then find out that several thousand rubles will be debited from me in a month. This not only causes concern, but I don’t like their approach, and I also basically don’t want to give them the card number with the code and full name that they learn from the card number.

Questions:
1) Is there really any reason for concern here and you should not indicate a card with money, but should you make a new card with a balance of 1 ruble for a demo period of the functions of this service?
2) Can auto-debit my card balance go negative and then I still owe the bank?

Answer 1

Never give your money card number to anyone. Release a virtual machine - Ya.Dengi, Qiwi, thousands of them. Throw on it and pay from it and only from it. As for the name - in my opinion, you can write from the bulldozer, but I can issue a card, for example, to a friend :) The main thing is that the name that is on the card is transferred to the service

Answer 2

1) Release the virtual machine
2) Go through the registration
3) 10 minutes after payment block the virtual machine
They will not receive any of your personal data except for those that you yourself enter