Cart for purchases

We just recently purchased our canvas and bought 9 pictures one night. There is no cart to put in several purchases. So each is a seperate purchase, each come up as a seperate purchase on our credit card, and, there is a pre-authorization charge of $1.00 added to each charge. So we were charged $9.00 extra above the purchase of the nine photos, which ranged from $1.95 - $3.95. Which so far have, we have not been reimbursed for. 

Two comments:

1.) Make a cart where several purchased can be done at the same time.

2.) Stop charging a pre-authorization charge. And return this charge promptly to those you have already charged.

Thank you.