Bad service

We received email on 30 October 2017 from Melony Muller informing us that we have not paid for a rented car on 15 July 2017 from Thrifty and she will hand us over. On 31 October we contact Thrifty and spoke to Rowan at call centre. He informed me we must sort this out ourselves. Payment was done on 17 July 2017.