Poor service after installation

We had cameras installed at our home by Tshenolo PI. My father had some technical issues with password resetting, which was reported on several occasions to no avail. We were assured that the technician would contact us, three weeks later no feedback has been received. My father has contacted them on facebook, i have contacted them via whatsapp. They promise to resolve the issue but do not. quite disappointed with the poor feedback because they are very active on social media