Question:
Can a credit card company debit your account for the full amount owed on your credit card without your consent? This happened after I had already emailed and spoken to them on the phone regarding the issue of not being able to make the minimum payment?

Answer:
It depends on what kind of agreement you had with them. If they agreed not to take the full amount then they should stick to the commitment.

It would appear that the person you spoke to neglected to pass on the instruction to the administration department. Call them and ask them to rectify the situation.

In future make sure that you get a commitment in writing and take down the name of the person who helped you. You should also follow up daily until you are certain that the instruction has been carried out.