Temprary Network Error(I need to register my claim

I lost my phone on Sunday i then called MTN to blacklist the phone and did get the ITC number and went to the police to report the lost phone and on Monday i tried to phone MTN FSP Insurance and every time when i tried to call before i can be transferred to a consultant there is a recorded voice that says that We are currently experiencing temporary network error,I tried to call them the whole day yesterday and i also send an email and get email back from them which specify that their turn around time is unfortunately 5 days and their phone number is still no going through even today.I am frustrated since i am now using 99 rand phone with no facebook,Watsup and Instagram. From Sunday i am unable to register my claim.