I guess you should stop and forget what had happened to those bitcoins of yours, that was 2013 and the support is different from that time and the logs I guess have been deleted already. So they cant answer your issue way back 2013. We didn't even know if the lost bitcoins are from bugs or was stolen from different people since you don't have enough proof for the bug. If you can show us the address where do the funds are then we can trace where do the BTC sent on that time way back 2013.