Is RS Components a Ghost Company??

My concern for RS Components need to be made known of their terrible turn-around time to reply to your emails or not replying at all. I have send several emails to *** for product enquiries, however, every email I have send received no reply. I am unable understand how they are able to have a successful business with manner they are running their online e-commerce?? Don't waste your time emailing the RS Component South Africa they will not reply as though they don't exist.