Sheer incompetence at store level and call centre!!!!

Made a purchase at Edgars - Chatsworth Centre on 8th February 2020. The teller made an error with the transaction, as a result it had to be reversed and reprocessed. Received my statement on 11th February. Still reflects both transactions with nothing being reversed. Logged a reversal request with call centre on date of receipt of statement and was given the assurance that the transaction will be reversed and that feedback will be provided to me within 48 hours.

Lies!!! No feedback and no reversal!!! Phoned again today. Balance still the same. Reversal not yet processed.

How much longer must I wait for the reversal to be processed?