Poor Service from Momentum

I have been with Momentum short term a while now but have never actually had to claim. I moved my building cover to Momentum last year as well. I had to make a claim yesterday for a tree that fell over damaging my roof this weekend and and quite shocked at the pathetic levels of service. Firstly I could not get through the whole morning yesterday through the call centre. I kept getting put through the motor claims who promised to call me back but never did. I eventually direct messaged Momentum on twitter and eventually someone called me back around 12:30pm to register my claim. I received an sms this morning to get hold of the assessor Digicall Assessing Solutions to call them back. I tried to call this company several times and the number either continuously rings or you get put on hold for long periods of time. Should these service providers not be calling me? They eventually called me back a short while ago to say that an assessor can only come out on thursday. I have a tree fallen over lying on my roof the tiles and and timber have been broken and the ceiling exposed to the elements. It is raining at the moment. This situation needs an emergency assessment and a tree feller to remove the trunk laying over the roof asap. I struggled to explain to the person who called me why i need someone out to my property asap. Does Momentum not have an emergency department that deals with such issues. Eventually he said he can only get someone out tomorrow to assess and an emergency repair contractor out tonight. I feel that this situation is not getting the priority it deserves especially given the fact the the actual logging of the claim was already delayed unnecessarily. The longer that this is delayed the larger the damage will be to my property. I moved all of my business to Momentum from Outsurance assuming that they were a reputable company and with deal with claims in a professional manner. Based on my experience thus far I think I make a big mistake.