You do not have to tolerate harassment from Global Trust Management. Repeated phone calls, unlawful threats of arrest or wage garnishment, and failure to provide written debt validation are all FDCPA violations. Once you request that a collector stop calling your workplace, they must comply. Sharing your debt details with third parties or using intimidation and profanity is also illeg... https://protectionforconsumers.com/stop-global-trust-management-harassment/