"Jehnavi" wrote in message
...

When you use plastic at some retailers (gas stations in particular),
they 'block' your card. This means they authorize and reserve money in
your account - typically $50 to $100. They don't know exactly how much
you'll buy, but they want to make sure you can afford it. If you only
buy $20 worth of gas, they won't release the remaining amount
immediately -- it can take several days. During that time, you don't
get to use the blocked money and you might bounce checks or incur
overdraft charges.
There is no difference in how retailers block debit vs credit cards.

Eh???? what are you on about????