Beware of Bluetti powerstations

Beware of Bluetti powerstations in South Africa. Mine stopped working. Went to their website. No telephone number. Only an e-mail address serviced from China. After a long time, I was asked to send it to a house in a golfing estate. Did so. Technician said he had never worked on a Bluetti 200 Max before. Been months. They cannot tell me what is wrong or fix it. Now I have a R25,000.00 brick/doorstoppper. Be warned.