Discovery withholding cash back for 3 months...

Waiting for cash back from a transaction made at Dischem on 6 May. Call logged on 26 June, feedback to date is this is its being escalated as they not picking up the transaction. It’s on my bank statement and I’ve even supp**** them the slip from Dischem showing the purchase. I’ve lost all faith in Discovery support, as they won’t provide any feedback unless you harass them. And the feedback is poor. How can the status be the same for 8 weeks? Clearly nothing is being done and they don’t give a ****. Wouldn’t refer them to anyone to join