My balance is missing and there is no assistance from Sunbet

I loaded a voucher and played on the slots on Friday and was left with a balance. I signed out and went back to the slots to continue playing only to find out that my remaining balance was gone. As I am writing this review my balance is zero. Since Friday I have been using their chat link and sending emails to Sunbet with no success. Today is Sunday and there is still no assistance received from them and my balance is still on zero. This service is unacceptable. If they do not value their clients, the least they can do is credit them with their remaining balances and close down for business. I want my money by fire by force.