Poor to non existent support with unprofessional service

Purchased a 12" android head unit for a Landcruiser 200 in September 2022 with assurances it was 100% compatible. Features I required are not all there or functioning as promised. Eight months and counting. There are outstanding configuration issues and inconsistent performance from the unit in multiple areas. Changes to the original order were not done so incorrect options were delivered. Despite promises to correct and credit, nothing was done. After receiving unit, the problems started. Installation assistance and after sales support was poor. I often had to wait days with multiple follow up calls for a time when assistance could be provided due to their "other" workloads. Eventually, in December 2022 I got some assistance posting a bad Hello Peter review, which received a very indignant response, but at least some assistance. Solutions though were guesses of try this, try that, install this, flash the firmware etc. Still left a lot unresolved but at least the unit started to work and integrate to some degree. Since January 2023 all requests for assistance have been ignored. Calls, Whatsapps and mail goes unanswered. I have very expensive radio that is not what was promised or advertised.