Nedbank home owners insurance bad service

Good day Our geyser bursted on Saturday the 2nd of January 2020, we called our insurance which is Nedbank home owners insurance and made a claim. A plumber was assigned and came the same day to inspect and he said he should be back to install a new geyser latest will be Wednesday the 6th of January 2020 but till today the 9th of January we don’t have a new geyser installed and we using cold water in the house. Since we spoke on Saturday when we made the claim the insurance has since been silent on us and we had to call them for updates and they have just been giving us different stories blaming the suppliers but only to find out the bank hasn’t approved funds for the plumbers to purchase a new geyser.