LOYAL CUSTOMER RECEIVES BAD SERVICE FROM MTN

After being a MTN customer for more than 30 years, I am deeply disappointed with the bad customer care I received from the Liberty Midlands Mall branch (near Woolworths), Pietermaritzburg. I was due for an upgrade to my cellphone and visited the above branch on Friday 27.4.2018 to find out after waiting more than 2 hours, that I would be required to return since the sim card for my free modem could not be activated. I returned on Sat 28.4.2018 with the modem for activation as promised - nobody knew about my upgrade after I had been told previously that someone would be informed about it. I was again informed that I should return as there was an error (no credit) on MTN's computer and that the sim card could not be activated AGAIN! When I asked if the sim card could not be couriered to my work as I live and work outside PMB I was told "we do not do that". I then inquired to speak to the Branch Manager and I was advised that he wasn't in. So I am expected to return for the THIRD time at my expense and my time for NO fault of my own! I am very disappointed with the lack of service that I have experienced and certainly will not recommend anyone to MTN after such bad customer service. Where are the days that companies went the extra mile for their loyal customers and definitely after 30 years of business?