Last updated on December 16th, 2019 at 11:25 amHow to make a Complaint to Quiznos Quiznos have a complaints line on 866.4.TOASTED (866.486.2783)  or 720-359-3300 where you can make your initial complaint. A structured process is in place to handle your issue and keep you informed on a regular basis, and various other contact methods are