Europcar Collections Disaster

I was very happy with the rental. Nothing was wrong and I was so happy with the company, until I had to deal with the Collections department. 1. Got an invoice of R 3853.17 which included 1 day rental, refueling, tolls etc. 2. I send it to the insurance which sorted out the day rental. 3. Europcar send me a credit note and I paid the remaining amount. 4. Suddely i get a R2000 invoice for damages and a R5000 invoice for 2 days rental, refueling, tolls etc. 5. After phoning and writing emails, nothing happens and i get this same R5000 invoice sent to me daily.

These guys are driving me crazy. It does not help i write another email as no-one reads it and try to resolve it. They don't know what is happening around them