Pathetic services from Tempest Car Hire

I hired a vehicle last week and as usual, a deposit was taken. Which was all good. I hired the car for 3 days. It was a small Picanto (old model) which did about 56000km . I thought car hiring companies do not keep their cars with over 15000 km. The vehicle rattled like an over used car and everytime I did right turn , I felt something underneath the car was going to fall out. Needless to say I felt so unsafe in that car. But that was not all. Afer returning the car , I discovered 2 days later that Tempest debited my credit card account twice. The second amount was more than the deposit amount. Upon query, tempest said that they cannot see the 2nd debit on their side. I sent proof of statement ith the 2 debits. Its now 4 days later they have no resolved the issue. They now advise that I must wait 4 -7 days for a refund. So technically they are enjoying earning interest with my money. Still uresolved. Pathetic service from the accounts department. Moreso, I was told that they do not have a senior, nor supervisor or accounts manager. I threatened to go to the press and then a senior suddenly calls me (Wow lucky me) . Still unresolved - still waiting for my money