Telkom not delivering outstanding items, but makes us pay for it.

Why is Telkom not upholding there contractual obligations? I have upgraded my service in Jan-2019, and still have not received my outstanding items. Telkom is suppose to deliver the following items as per the upgrade sales person, 1. New Router 2. WIFI Extender 3. 3g Telkom sim card. I am paying for All the above items as per the upgrade, but still have not received this, i have being call telkom for more than an month, and still have not received any joy, can some one from Telkom please sort this out, as i am going to ask the bank to put a stop order on this debit order if i dont receive my items as promised by Telkom