Double billing - Reluctant customer service

Having double debited my account (on both my cheque and credit cards), Hertz seems to be really reluctant to correct their error. It's been more than 5 days since I raised the issue and gave the consultant at Loop Street my details and my bank hasn't heard a word from them in terms of confirming their error. All it takes is a phone call to the bank and this can be resolved! On the other hand, they are so quick to respond to slight damages to the car - even getting correspondence in less than 24 hours for the matter. Terrible customer service<br> <br>