Very bad business practices

These guys all need to sort their problems out. If its not the installer not having tools on the installation day. To installing a faulty door sensor so we get woken 4 times the one morning and installing the wrong type of detector for smoke instead of heat as quoted. Then we call them out for their faults and then we get billed because of the callout which is pathetic on a new installation. So where is the warranty guys on poor workmanship. Having to wait for many days before you get a response from senior managers and still waiting. Having the installer refuse to then come and fix his faulty installation after a complaint laid against him is petty. Having to pay extra on the installation because of previous system PIRS that were supposed to be serviced and checked during installation that all of a sudden went faulty after installation, strange. I wonder if anything gets done with these reports as I still see so many of them and for the same problems so its continuous issues looks like. I really hope they can get their act together its sad seeing things like this happen, also its a requirement for Insurance companies to use armed response and then you get this happen to you.