Water damage at Storage Genie

Stored our household contents into Storage Genie Edenglen facility on 16 November 2020. On 21 November 2020, Mack the manager at the unit informed us that our unit had water in it from the flooding of the allay way next to our unit ( water flowed under our roller-door into the unit). This was the week that all the floods in the Centurion, JHB area. We were told that he informed his head office and sent photos. By the Monday, the floor that we could see in our unit was dry. So we thought all was good until we moved our household contents out at the end of April 2021 into our new home. The boxes all the way to the back of the unit were had mould, the contents at the bottom of the boxes was all mouldy and our furniture was damaged and rusty. On inquiring from Storage Genie via email and numerous telephone calls, I have had no response other that "we will investigate and get back to you". I know the contents are not covered if there is damage but the damage was due to Storage Genies facility not being waterproofed. The damage was not due to our negligence but Storage Genies.