Mongoose Metrics undergoes a rigorous process in blocking and identifying spam calls across campaigns and accounts. All phone numbers undergo a rest period before and after Mongoose Metrics acquire them into our pool of numbers. After a toll free number is assigned to a campaign, an algorithm determines whether the call is from a spammer based on the frequency and length of calls. Once a number is identified as a spammer, it will be prompted during a call to "press 1 to continue" to filter out automated messages.
Mongoose Metrics allows customers to block phone numbers on campaigns in the case of a bad number. To block a phone number from all campaigns at the account level, access the following article: https://mongmetrics.zendesk.com/entries/99199146-Block-Callers-Account-Level-
To block a phone number at the campaign level:
Select the "Manage Campaigns " tab.
Click the "Edit" link for the campaign you would like to configure this for.
Click on the Campaign Options header on the left and select "Configure Call Block Filter" from the drop down.
If you have a filter already in place, you will see it listed here. To configure a new filter, click on the Update tab.
There are three options for Call Blocking Filters: block a specific area code or number, block all calls from within the US, or block any calls from a toll free number. Once a call blocking filter has been added to a campaign, any logged call attempts from a blocked number are stored on this page to monitor.