Bad Customer Service

A few months ago I was contacted by MTN office in Gauteng? As my cellular was due for the 18month upgrade. I agreed to the upgrade with MTN to go from The Samsung S8 To the new D50. A day or so later the lady called agian to confirm delivery. Was excited with this as I had no idea what the D50 was like. She mentioned that I had to have my identity with me. She read back my details only to once again be told that I was on my previous married name with them. I told her I had, had many cellular phones with MTN since 2005 and that they should have my details correct. I had just upgraded another cellular phone at the Branch in Centurion with no issues. ??? Why must I produce my divorce decree after 14years and more being with them to receive my phone.She mentioned she would get back to me . I am still waiting on this phone...The excitement, gone and have this wonder will I ever recieve this phone? Wow ! I really wanted the Samsung S10 when I was at the Centurion branch but only to discover that it would work out more on my contract where I wished to cut down on my expenses but not receiving the service from MTN has really made me wounder how they treat customers that are not even a year into their contracts ? NOT Happy!