How should you destroy a credit card that you're no longer using?

Yes.

It depends on the gas station. Some will not let you use a credit card to buy a prepaid card.

Yes, as prepaid credit cards act like regular credit cards.

You are basically transferring cash from a "permanent" card to a temporary, disposable one.

You should never share your debit or credit card password with any Amazon seller unless you are at the checkout page requiring you to enter these details. And besides, the...

Assuming you mean you have lost your physical card, call customer service and tell them you need a new card. You should be able to find the phone number on...

With the prepaid card, you should be able to watch Netflix on any device without a credit card for as long as the card can pay for it, yes.

If you have to close your account and open a new account, that could hurt your score a little.

You know that this person isn't good for you or others, so it's best to avoid the person. If you're not in a position to avoid the person, limit your...

Yes, they will. However, you can call and cancel the subscription; they will most likely refund your money as long as you call immediately.