Hertz is the WORST car rental company ever!!!!

Rented out a car on the 5th October 2020 from the Hertz branch at the East London Airport and it was returned on the 12th October 2020 same location. We were invoiced on the 19th October 2020 ONLY its the 30th October 2020 the holding deposit hasn't been released. We've been given run arounds for over 2 weeks now and now we being told we must go to our bank and request them to release the deposit, funny how when the holding deposit was taken from our account our bank was never involved better yet I was never told to speak to my bank to authorize the hold now that the money needs to be released we are being sent from pillar to post and we are told unfortunately there's no guarantee that when they send a follow up email pertaining to the query of releasing the deposit that the money will be released. Is this the type of service Hertz gives to customers, we've rented with Avis before and never did we have such problems and now being the 1st time dealing with Hertz I must say although their rates were reasonable WE ARE NEVER EVER using this car rental company ever again and we shall extend this to our friends and family. The service is pathetic and they staff doesn't know how to deal with customer queries!