Robocallers are responsible for making millions of calls a week, and even if you’ve placed your name on your state’s ‘Do Not Call List,’ that may still not be enough. Tech experts say that most spam callers and phone scammers don’t even pay attention to that list. If you really want the robocalls to stop for good here are a few tips. There is an app called the Robokiller which intercepts spam calls before your phone even rings. The app uses “answer bots” to keep the callers away. It is $3.99 a month but you can sign up for a free trial. If you are a Verizon customer beginning in March they are launching a call filter blocking system along with a free spam alerting and call blocking tool that customers can sign up for. Sprint is working on a tool that will allow users to tell if the number is real or if it is a robocaller “spoofing” a local number. Sprint also offers a robocall alerting and blocking service called Premium Caller ID that customers can sign up for. AT&T has a few options including AT&T Call Protect, which automatically blocks fraudulent calls. AT&T Phone customers can block unwanted calls from up to 100 numbers by pressing *61 on their device as well.