Bad Customer service- Customer needs comes last at MTN

On 25 July 2018 I wrote these :In August 2017 I upgraded my phone with an Samsung S8 which had deal to get 256GB SD card with it, until this day i have not received the SD card. I have been sent from pillar to post by sales persons at Wonderpark MTN with no positive outcome.

09 September 2018 -It has been over a month and two weeks since MTN's Complaints Analyst Alice van der Merwe promised to follow up on my issue and provide feedback. As usual have not received and positive outcome, yet I get an SMS saying I am due for an upgrade on my other contract. I ask myself if MTN ever practices Customer Satisfaction or do they ever listen to Customer Complaints. Maybe it's time that I take my 3 contracts with MTN to other service providers who put customers needs first.