Tempest holding rental deposits without explanation

Rented a car from Tempest Cape Town International branch 2 weeks ago. Returned it, it was checked to be fine, no new damages and I went my way. Received the invoice that shows my deposit owed to me so no problem. I know I need to wait a couple of days for the deposit to be paid back. 2 days later I receive an SMS "Good day apon your rental arrival dmage was found on vehicle.for more infomation please contact *** ref***" Thinking this is a **** because of the spelling (it is not) this apparently means damages were found and you won't be getting your deposit back. I emailed Peter Pedro, no reply. I tried more than half an hour to speak to someone in the claims centre, no luck. No communication whatsoever, just them keeping your deposit because they can. Will definitely not be using Tempest / Europcar again. Not worth the discount that you get through Discovery as the service is terrible.