Poor service.

I have rented a vehicle over the weekend of the 15th of November 2019 and returned it on the 17th of November 2019. I was told that the processing of the invoice will be done on Monday the 18th. I have made several calls to customer services and was told the new system is causing problems and it will take some time to process the invoice and refund me. I have never had this problem with Bidvest. Cheaper is not always better. Poor service.