Storage unit theft.

I had goods stored there since 2020. I arrived to collect my goods in May 2023. The keys were not in my possession due to a previous break in at the unit where nothing was ******. The employee unlocked and I could see some items missing. Very recently due to the clean dust-free spots they had been. Reported to owner. Was told I must have removed them. I haven't lived in the area for a number of years and had last been there in 2021. Till today they won't take responsibility and the owners never made the effort to come to the storage unit. I have never met them. So unprofessional.