Poor service: Discovery not meeting their promises

As a loyal customer with numerous products with Discovery I am deeply saddened and disgusted by the poor service. My gym debit order went off on the 1st of September. According to Discovery the cashback will be paid within 5 business day from debit order. After numerous calls and queries I still have not received my cashback and it is a month later. This is also not the 1st time this happened this year, BUT THE 4TH TIME!! Every time I need to waste my airtime to follow up on the money Discovery owns me, not to mention the interest I could receive on that cashback for a whole month. If this happens again for October, I will cancel ALL my products with Discovery, including Discovery Health, Discovery Insure, Discovery Invest and Discovery Bank. I am fed up with this ridiculous service.