Not able to contact anyone at the company

I ordered products from them which arrived and were fine - no complaint there. BUT, I have been trying to get hold of these guys for ages to get more info and specs on one of their products that I purchased as want to formulate with it. Its impossible. They don't answer emails or their watsapp no. I would not call it professional. And the fact that I only see 5-star reviews on their website makes it very suspicious. Why leave contact numbers if you are not going to answer them