Incorrect charge imposed

Following msge was sent on email and whtsapp chat to Webafrica. They claim that because they had to reactivate my service (which by the way never happened), they were entitled to charge me a reconnection fee. I was erroneously debited with a reconnection fee of R575. My service was suppose to be terminated on 1 Aug 2022. The morning of 31 July 2022 it was already deactivated. So my request was for Webafrica to fix up their mistake and reconnect for the one day before I switch over to Homeconnect on 1 Aug 2022. So I expect to be refunded the erroneous debit order of R575.