Incorrect charges and poor customer relations

I rented ***orking office space from Spaces Design Quarter, part of the Regus Management Group. I signed a one-month subscription with cost approx R2800 and cancelled it immediately, which would be required to ensure that I only paid for one month. I actually only used the space for 3 days. For some reason Regus saw it fit to charge invalid amounts to my credit card totaling R10,000. I raised the query numerous times and had to settle my credit card before the refund was processed to ensure that I did not incur interest on these transactions. Following which, Regus emailed to say they would refund to my credit card, which I explained to them should not happen as I settled this, and if they paid this into my credit card, I would not be able to access this money. For the average person, R10,000 is a great deal of money. I received a long-winded email about processes and policies. While quoting that they could not do this, in the same email, I could get my deposit back via their online app. Would you believe that the app allowed me to nominate my bank account for the deposit, but the incorrect charges had to be returned via my credit card. So internally Regus functions like a government institute creating policies which are contradictory and in summary are using clients' money to earn interest and not taking any consideration to suitably correct their mistakes. I personally would not use Regus ***orking spaces, one is better of using The Cube.