absolute worst service i have ever experienced in my life

I have a home loan with Nedbank, also a home insurance. about a month ago i had storm damage to my house. i phoned them and raised a claim. it took them 2 weeks to get someone to go have a look at the damage. no one came so i got a contractor out to come give a quote, e week later they first need t send an assessor to come verify the quote. it is now another week later. i don't get hold of them to get info how far they are they don't call back, and the storms continue, causing even more damage