Rejection reason unsatisfactory

I wanted to take a tablet at Telkom potchefstroom, and after waiting for about 90minutes i was told that the application was rejected because I have a foreign ID! How is that possible when I hold an SA ID which just shows my country of birth as Zimbabwe. I am a permanent resident of South Africa, with just 1 MTN account which I wanted to move to Telkom. I am not surprised by the number of bad reviews Telkom gets on Hellopeter, service is poor and unsatisfactory. I do not understand how my ID is foreign when home affairs issued it. How can you not have a system to verify with home affairs such things??? Maybe your rejection was a blessing in disguise because there are too many negative reviews on your organisation and I am glad I will not be attached to such a problematic company in any way!