Lalela Support ignoring all my requests for support

Hi. I bought 2 Lalela Trolley Inverter's 720W at Builders warehouse. The first Inverter started losing the time it lasted with Loadshedding. As they have a warrenty, I contacted Lalela for this inverter and was helped wityhin days. They eventually picked it but and retrurned it with a battery replacement. It is all due to the regular times of Load Shedding, but they still replaced the battery as there is a warrenty on it. Now the second one has started doing the same and is so bad, some times it only lasts for 10 to 15 min, with only a TV Scrren, Router, Laptop. printer and phone connected to it. I again logged this with Lalela support on their website. There is no number one can call on their site. I have done this now 2 time and it has been over a week since the first time I logged this issue and NO ONE has come back to me. I did have a number from the previous time sone helped me with the firsat inverter, but noi one answers this phone. I am extremely disappointed that I will get good service the first time, but the second time (with a different inverter) the service is non existing. We all know this is due to Load Shedding that Inverters do not last, but as the Inverter is under warrenty Lalela has to help me. Please assist me in at least getting tyheir support to contact me. This is unexceptable and the worst possible service one can ask for.