Is the salary earned from working in a call center that relies on fraud by stealing phone credit considered lawful (halal) or unlawful (haram) money?

What has been mentioned regarding lying and deceiving people to steal their money and take it unjustly is not permissible to engage in, nor is it permissible to assist in it. And whoever works in such a thing, what he earns in return for this work is illicit and unlawful gain. A Muslim must fear Allah and avoid what is forbidden and cooperating with the people of falsehood. For the Prophet, peace and blessings be upon him, said: "Indeed, the Holy Spirit inspired in my heart that no soul will die until it completes its term and receives its full provision. So fear Allah and be good in seeking provision."