I can't believe this lousy service from Dischem

On 2 June 2019 I bought a mini nebulizer at Dischem. Before I used it, I wanted to make certain that I could easily get the replacement filters, which need to be replaced every 30 days. The store didn't stock these, so I engaged with the Customer consultants, who undertook to source them for me. Now, 5 weeks later, I'm still waiting, and theoretically, my device is useless to me. I get promises, but no deliveries. I'm sure they'll come one day. But my real complaint is, since the early stages of this problem, I've been asking to talk to a Director. One of the consultants I spoke to told me the Directors won't speak to customers. Seriously?? Last week I had a phone call from a regional manager. I told him I would only talk to a Director, and he said he would get one of them to phone me. I was asked by one of the customer consultants for my phone number, but I still haven't had a call. So, they won't allow me to phone a Director, the Director doesn't phone me, and I still don't have the critical part I need to keep the nebulizer operational. Where to from here? I suppose with my spend at Dischem only being about R30,000 per annum, I'm deemed to be an insignificant customer to them and not worthy of their attention. How sad.