No CF7 form at http://www.anypctrouble.com/contact-us/
The spinning arrow is often due to a Javascript conflict with either your current WordPress theme or one of the other plugins you are using - see Solving CF7 Javascript Conflicts.
Use Firebug or Chrome Dev Tools to examine Javascript conflicts in detail - see http://wiki.simple-press.com/installation/troubleshooting/plugin-conflicts/ for general guidance.
You will need to be skilled at using Firebug to find what is causing your Javascript conflict and how to resolve it - see https://getfirebug.com/wiki/
Mail not being sent is likely to be a separate issue.
Though the plugin successfully sends millions of emails every day, there are a host of issues that can delay or stop emails on both the sending and receiving ends of a typical email. It depends entirely on your local configuration.
You will need to investigate this issue for your particular local configuration. See Contact Form 7 Email Issues