False Advertising for free bundled Wireless Charger

I recently purchased a Samsung S8+ throught Telkom and it was advertised that I would receive a free wireless charger along with the phone. When I got to the store and took out the contract, I asked to get the free charger and they told me to go on to the Samsung Rewards App and redeem the charger. I did so and I received an email confirmation saying that it would take a maximum of 4 weeks to deliver.

It's now been 5 weeks and I'm either getting the run around or no responses from both Telkom and Samsung. I'm concerned that either Telkom or Samsung is going to fall back on the clause on their Terms and Conditions that state that it's only while stocks last (Telkom in store has told me that they were out stock). This is fine on it's own but it's unacceptable to be used as an excuse after I have already purchased the phone and after I specifically asked for it in store and after I redeemed the reward on the app. If you were out of stock, this should have been made clear BEFORE I purchased the device and not weeks and weeks after the fact.

I look forward to hearing your response and resolving this matter.