Hello!
Kamran here to help answer any questions. First, we would like to state that Truecaller does not sell data, and we follow Google Play and Apple Store policies, meaning we do not upload numbers to make them publicly searchable.
Therefore, it is important to think about how a number could have ended up on a spammer's list - is the number listed in any other public source? Has there been any online shopping where a phone number is input or for any forms where a number is used? Have you checked to see if your operator sell to third parties? These are major causes of spam calls.
The purpose of Truecaller is to stop people from getting spammed or ripped off from sales, marketing, fraud, etc. Ignoring this purpose would go against our beliefs of creating communication safety and efficiency. Without our user’s trust, we would not have grown to over 250 million users globally. We take spam calls/sms and our user’s privacy very seriously, and that is why it's important to us to converse, listen, and answer our user’s concerns and help people understand the app’s purpose and our mission to defeat spam.
Best,
Kamran