There are no contracts, it is prepaid. It is a paid month by month service. There are two options the basic plan and the plus plan. You can find the details of each plan at Visible.com. These are single line plans so if you are bringing 2 phones you need 2 accounts, 2 email addresses but you can use the same form of payment for each.
Customer has no phone number to call. To contact them there is chat, Facebook messenger, Twitter, and also on Visible's Reddit page.
It is at Visible's discretion to raise prices but I think the current promo and discounts will be around at least a year maybe longer.
Physical SIM's are shipped FedEx next day, they require a signature so someone needs to be home. Once you get it you activate it through the Visible app.
I am not a a tech kind of person and from what I can tell your phone store the contacts. You should be able to check this by finding the contact icon on your phone.
I will point out the community forums is peer to peer. You will need to check your phone to see if it will be compatible with Visible. You can check it here. https://www.visible.com/shop/compatibility
