You need to contact support in order to increase the limit, but since you told us that there is a bit lack of communication with the support so there is only one thing you can do (waiting).
It can be very discouraging for many gamblers to have to wait for response from support when they have issues, but that's an inevitable action to take if you really want serious issues resolved. On Issues, some casino's are very quick with how they respond and handle complaints because the management invested properly into a goodservice team to sort complains quickly. Some casinos are still limited in that aspect, and they workload is too much for the available service team that can handle those sort of complains, so response time is longer.
Casinopunkz is maybe troubled with this challenge, and something they are working on, things will improve with time.