Very bad procedures and processes

Worst service ever. The car was good but the procedures and processes are very anti-customer. I needed to make an extension for 1 day but the call centre operator told me I would have to make a separate agreement and deposit for an extension. Other car hires simply quote and bill your existing deposit. Then I returned the car on the 22nd of December but only got an invoice on Tuesday 24th December now it's 25th December and still my balance has not been returned to my account. Other car hires do it in 24 hours irrespective of weekends or holidays. I've used Avis, Bidvest, Xtreme and Budget who all have seamless processes and quick turnaround times. Europacar should not be even close to Avis with such a shody service