Help my geyser has burst!

Our geyser burst 5 days ago. Trying to call insurance customer care, on the phone for over 30 Minutes at a time with no answer. Tried over 10 times in the last five days NO ANSWER!!! This is an emergency and you can't get through. Tried online and requested a call back numerous times!! My house is flooding and I can't get help. This is got to be the most pathetic insurance company. Help please!!!