Unprofessional business practices by Tracker

Tracker customer service called me the next day after my HP post and updated my contact details. However, the lady I spoke with promised to correct the particulars on the installation certificate Tracker emailed me which differed substantially with the updated contact and address details I provided Tracker on a previous occasion and vehicle details on the certificate the installer gave me after installation. Because I needed the installation certificate for my insurance she promised to email me the corrected certificate before close of business on the same day. It is now five days since and still no installation certificate.