Customer Service

I have been trying to sort out a changed booking after Travelstart made an error in the change. This is now the 3rd day that I am trying to get someone to respond. You cannot phone and speak to anyone. I have put 3 queries in via their contact e-mail, one urgent. I have sent numerous Whatsapp messages on their WhatsApp chat but no response. I would just like to speak to a human being and not a computer. What happened to Customer Service. The fact that you cannot speak to a travel consultant is shocking!