Bad Customer Service

We had Maxidor burglar bars and gates installed in November 2012. My husband contacted Maxidor via phone either in 2014 or 2015 for a service. Someone came to have a look and there were parts that had to be replaced because of rust. My husband followed up numerous times, but we still have had no feedback or contact from Maxidor. Unfortunately all communication was over the phone so I don't have any specific dates or record of the conversations. I just tried to email the contacts I had and all comes back as undeliverable. One of our gates are badly rusted and needs urgent attention. Our original job number at installation was CPT 339118. After sales service really bad.