I am fed up with this company.

Messing up my credit score for a tracking device that was never installed. they never sent me an SMS to get the device installed, now they have listed me as missed four payments for a device I do not have. I called their offices they keep transferring my call back and forth, customer service says I must speak to accounts (EX8) account also transfers me back to customer service they both just cannot help. I am fed up with this company.