Called me today saying I owe Spectrum money despit...

Called me today saying I owe Spectrum money despite my never having an account with them saying I owe them for equipment costs. I called them back after calling spectrum and them saying I don't owe anything, Told them there's no reason they should be calling me because I never had an account with spectrum they shoved me into something saying please hold and blasting 1 second of music over and over until it eventually hung up. I know its fake purely because Spectrum would've told me if I owed them money.