Santam and Europcar messing me up

My car was involved in a car accident on the 31st January 2018 and I registered my claim with my insurer Santam on the 1st February. The claim was approved and I took my car for repairs on the 19 February. Santam arranged a hired car through Europcar. I paid Europcar a refundable deposit of R1 400 for fuel, and signed a contract with them that the refund will be processed within 7 working days after returning the hired car. I returned the hired car to Europcar on the 5 March 2018 with a full tank of petrol and no damage. Europcar has not refunded my deposit. I called the Europcar Midrand offices several times. I spoke to Ronaldo le Fleur and he communicated with their head office. He escalated the matter to Theodore Delly. Theodore told Ronaldo that my money was not processed because Santam had not settled my account for repairs. I called Santam and spoke to Khanyisile Nxumalo. She copied me on an email that she sent to Theodore Delly, and Theodore never responded. I followed up with Khanyisile from Santam and she forwarded me an email from Europcar wherein Europcar said my payment has been processed and it will be in my account in a few days. Still no money was deposited. I sent Khanyisile another email and she has never responded to my email again. I then called the Santam call center and I spoke to Shameela. She called Europcar to enquire, and she came back to me and reported that Europcar said they were going to process my payment on that day. Still I have not received my money. Santam is failing me as their client. I pay my premiums every month and I expect Santam to ensure that I am treated fairly by their supplier. Afterall the money paid for the car hire is covered by my monthly installment. I am extremely disappointed that Santam does not take complaints about their suppliers seriously. Europcar is not being honest with me. They are not honouring their part of the contact I signed with them. Why am I a victim of a dispute between Europcar and Santam? Why does Europcar withold my deposit that I paid directly to them and in the process dishonour a contract I signed with the. I want Europcar to pay me back my money including the interest that it has been accruing on their bank account. Europcar are *******, they are earning interest on my money in an ******* manner.