Hello @roberto_tenorio 
Welcome to the Canvas Community. Thank you for posting your question. There isn't a general telephone number that we can post for you to reach Canvas Technical Support because each school that uses Canvas as their LMS (Learning Management System) either has a unique phone number to reach Canvas Support, or the phone number goes to technical support folks at your school. So, you will need to reach out to someone at your school such as a local Canvas administrator or your school's Online Learning/eLearning department to determine what that phone number is. Your school may also have a page on their website for Canvas-related information...possibly including a phone number for you to use.
I hope this will help, Roberto. Let us know if you have any other questions about this...thanks!
