MTN insured my contract phone

I have reported my new S8 plus phone as ****** on the 19 Oct 2017.First of all I needed my sim to be swopped with days of hell.2 weeks ago they phone me and said they want to replace my phone with a Note 5.??????????.They say they cant see that I had an S8plus.But I have the box.I upgrated to a s8 plus.Im tired for you people that treat a person like this.Ive started my contract in 2007.and this is how you treat a royal customer.You still deduct my monthly bill with the insurance.I went back to the shop and they told me that their server has a problem to up load.Upload documents of August????????????? Very poor performance from you MTN.My number is ********** .We can really end this contract.You treat a person like s..t And I dont get feed back from MTN.Very bad service