Avis service inefficient

The account was paid on a Friday the 26th of March 2016 and the account was supposed to be cleared and today it's the 7th of March and they are refusing to render a service to me because of failing to clear the account on their side now I'm being delayed, told to wait because their customer service opens at 8. This is rediculous. I use Avis every week for traveling in and out of mpumalanga I do not need such inefficiencies in my life. I will move my account where my business is valued.