Not sure if the system is like that in the US, but the best way to make a company react fast without involving a lawyer where I live (Quebec, Canada) is to send

Not sure if the system is like that in the US, but the best way to make a company react fast without involving a lawyer where I live (Quebec, Canada) is to send them a formal notice (https://www.justice.gouv.qc.ca/en/your-disputes/sending-a-formal-notice-before-filing-an-application/writing-and-sending-a-formal-notice https://www.justice.gouv.qc.ca/en/your-disputes/sending-a-fo...). Basically saying you will sue them if you don't get compensation. Most companies will contact you shortly after and it's way better than trying to go through the general help desk.