Upgrading my Internet

So, I tried to upgrade my internet through the website. I set up the appointment to be on Saturday(today) from anywhere from 1-5PM. It said that everything went through and I've gotten a receipt and everything. I set this up on Wednesday. I haven't gotten a call, nor a message on here telling me that the appointment has been confirmed. I have been waiting all day to see if they would call, nothing has happened. What's going on?