White River sleepmaster cant refund even a small cash deposit of R100

To be honest i had a pleasant time at sleepmasters, it was great service and they where really willing to help and i wanted to deal with them again, i paid a deposit of R100 cash for a lay bye but then i had financial difficulty and could not afford to carry on my lay buy so i thought i had lost my deposit. After so much time i get called about my deposit and get told that i can collect it. So i sent my wife to collect it and they said no refund we must purchase something but there was norhing that i wanted so my wife left it and told me she could not get the cash. So this is where i had such bad service from the White River branch. I went myself to collect the cash and was rudely told that they cant refund cash and i must give 3 months bank statement and they will eft my money within 9 to 21 working days. They state this is the policy and i stated that there was no where in the shop that shows the policy of cash deposit been refunded and i asked them to phone the head office to confirm the policy and said no we know the policy and wont phone the head office to confirm anything so i must purchase something for the money or leave the store. So i contacted the head office complaint department and informed them what happened. This is their respond to my complaint (For refunds on EFT purchases, we require the following documents:

- Copy of your ID; - Proof of Banking Details (matching the details of the transaction we are refunding). I contacted them again and said your terms and conditions are for eft which does not affect me as my payment was cash and to my knowledge eft stand for electronic funds transfer and my payment was cash. After my reply they have not contacted me since and i still have R100 cash deposit outstanding too me.