Poor service, incorrect charges,

I rented a car from Europcar N1 city in CT on the 7th of Feb. I had to pay a cash deposit as their swipe machine was out of order. The car was returned on Monday the 12th. By Friday the 16 at around 10am I called the call centre to enquire about my deposit refund. The call centre operator informed me that the car had not been invoiced yet and that they would send an email to the branch manager Craig in connection with this. Around 3pm I called Europcar N1 City and asked for Craig. I was told that he had left already and would only be back on Monday. The lady I spoke to assured me that she would pass the message on to Craig and that he would call me Monday morning first thing. On Saturday the 17th I received an amount paid into my account way less than I had calculated. On Monday morning around 11 I went back to Europcar. I asked for Craig, I firstly queried the fact that it took 5 days to invoice my rental return. He could not answer why. When I queried the returned deposit amount I was told I was invoiced for an additional driver. After checking this info on his computer he assured me that he would log my query with accounts dept and arrange a refund. On Wednesday 21st I called the call centre again to query. I was told by Nanette that they were awaiting Craig to authorise my refund. Fuming I went back to Europcar N1 , Craig then told me that the call centre was incorrect and that he had authorised the refund with a lady by the name of Emma the previous day. Around 3pm I called the call centre again and was told that my refund was now authorised and that payment had been processed. Then yesterday (Thursday) I called the call centre again around 1 pm. I was than told that my refund was only processed now and would take 3 to 7 days to reflect in my account. As far as my memory serves me any EFT should take no longer than 24 to 48 hours to reflect. I an deeply dissatisfied with this service and I would not recommend Europcar to anybody.