Rent from someone else! None, zero customer service.
I was charged a pre-pay for gas at the time of rental. The man at the counter told me it was only an estimate of what would be charged if I had them fill it up at return. When I saw the charges on my credit card statement I contaced Hertz and was told too bad - I signed the contract and I was charged immediately for the $70 on my credit card. Customer service didn't care at all what I was told and kept referring to "showing me my contract".
I will never rent, nor will anyone from my company, from Hertz again! Hope the $70 was worth it Hertz!!
Review about: Hertz Customer Care.