There are several ways to block annoying calls on your Tracfone fortunately.
Firstly, if you just want to restrict calls from people who aren't in your contact list, try the following:
- Go to 'Settings>phone settings>security'
- Enter your unlock code (which should be the last four digits of your phone number)
- Set the restriction to 'contacts'
However, if you prefer to just block the number (or numbers) which are annoying you, it might be preferable to do the following:
- Save the number(s) to your contact list as 'ignore' and set the ringtone for that contact to silent.
Lastly, and probably the best option to be honest is to
- Go to 'settings>Call>Common Settings>Call Reject
- Put all the numbers that annoy you into a group named 'ignore' or 'block' and then choose that as the call reject group.
I hope that helps, I know how annoying unwanted calls can be. Of course as a last resort, you could change your number but the options above are worth trying first in my opinion.