Dell Vostro service complaint

I have been chatting with Sahil to help with a problem I am having. At first he was helpful but I have been waiting over 20 hours for him to transfer me China support so they can send a technician to help. He has ignored since 8:33pm on April 21st. The I received a reply at 4:02pm after I asked again to be transferred at 1:16pm on 22 April. It is currently 5:15pm and I have not heard anything. What should I do?