Sim Swop Issue... 5 times no luck

I recently purchased and new phone and it required a nano sim. I bought one and the had to call Cell to do something swop. I cant believe the service. After giving them the information I believed to be correct, which is last airtime purchased, frequently dialled number and last dialled number. All 4 times they have said to me I failed the questions. So I asked why or which ones I failed. I was looking at my call register at the same time I was giving them the information. And according to them it wrong.

I proceeded to ask them to prove to me what is wrong as i have my proof. Which is my phone registry.

Today again I tried. I then ask the first Agent is my number RICA. She said yes it is, but not on my name How can it be as I know I bought it about 3 years ago. However ,I then asked for supervisor. He came online. Kabelo Ratshefola is the supervisor. I asked same questions. Again he gave me a chance and again I failed. But his tone and words to me made it look like I had no idea what I was talking about.

I asked again for them to prove to me. He just says system. I even requested a copy of all the calls I made and he said not allowed.

I hope senior people with the no how can assist

Glenton Whiteman ********** 091