Poor customer service

I purchased something online from Decofurn on Monday 26/11/2018. I sent a mail to change an item on my order. I have been trying to confirm if they have received the change, but I cannot get through to them - the call gets dropped whenever I am caller number 1. When I try to chat to them on their website I stay at being number 1 in line, but even then no one starts chatting. This is terrible customer service after I have paid my money I do not get any service from them.