Very disappointed by being charged double.

I am very unhappy with the way Thrifty treated me. I hired a car on the 27th March returned the car on the 3rd April. We checked the car with the guy who was helping me and there were no damages and I signed a clean sheet. Two days later I received an email from Keagen saying that the car is damaged and I told him I signed a clean sheet and by the time I left the car there were no damages. On a Thursday I received my deposit back but still on Friday the 7th April I received an email from Sune at claims department saying that they are busy with my claim still I explained to her that I did not damage the car. And she told me that she has not received anything from Keagen in Sandton. At night on the 7 April a R2000 was deducted from my account by Thrifty and no one told me anything. I am very angry and disappointed with this service how can they take my money without saying a word to me. i emailed them and Keagan promised me that they will return my money within 7 days until today i have not received anything. i asked for the contact details of somone who is busy with my claim in their head office but they refused. i am going to contact lawyers now because it seems it is so difficult to return my money maybe a lawsuit will help. R2000 is a lot of money and i need my money asap, i will never use this company again or nor recommending it to anyone.