Solis running a black hole for an email account

In December 2025 I purchased a high end Solis Hybrid Inverter for use within my company. Whilst I have absolutely no issues with the quality of the product the same can not be said about the so-called "After Sales Service". Approximately a month ago I emailed the South African support email address (saservice@solisinverters.com) with some suggestions regarding Firmware improvements to my model. To date I have received absolutely zero response which I not only deem to be unprofessional, but downright rude and disrespectful. What is the point in providing customers with an email address when it clearly is not being serviced ? One of my suppliers recommended purchasing Solis because according to them the product and more importantly after sales service was "superior" to other Inverter vendors. While I am not questioning the quality of the Inverter, I have a serious problem with the non-existent service. I own other Inverter brands such as SMA for which I never waited more than approximately two (2) business days to receive feedback for technical questions. Solis / Ginlong Technologies is clearly attempting to penetrate the SA Inverter market and one would think part of their strategy would be to ensure a superior after sales service to win market share. Clearly whoever they have running the SA operation is *********** and bringing the brand into disrepute as it is not rocket science to manage a support email address and ensure that customer enquiries are handled in a timely manner. Excellent product but if you chose to purchase this brand and require technical support expect zero feedback to your correspondence.