I would try to send them a personal message on here. I just checked and they last logged in 03/06 so it can take a while before they respond but it can help. I had an issue a long time ago and livechat also couldn't solve it. By contacting them via PM the issue was quickly resolved.
Live chat is more of a hit-and-miss. Since there are different agents taking on cases, I was hoping today would be better.
Finally got it resolved. Provided some proofs and finally was told it would take some time to get it manually credited.
Yours was about deposits as well?