This may actually do more harm than good. Spammers are already breaking the law as robo calls are illegal, scam calls are illegal, etc etc. They’re certainly not deterred by breaking one more law (calling numbers on the do not call). In fact there is evidence that certain spammers use the do not call list as a gigantic list of good numbers to call.
There may be something that Republic can do. If you look in your call logs (https://account.republicwireless.com/account/phones and then under the phone in question select “I Want To” and “View Calls and Messages”) do you see these spam calls shown there? Do note that the log is in UTC which is four hours ahead of Eastern Daylight Time.
If you do NOT see the calls there you’ll want to open a ticket and let staff know that you’re getting a bunch of spam calls that do not show in your call log so that they can help.