Loan repayments not correctly allocated

Good day

I have a loan with Capitec and I received an SMS with my amount balance. I am so shocked that I have been paying for a year and a half and there has been virtually no movement on the outstanding amount. What is up with that. What have I been paying for then? Please, may I have a copy of my original contracts as well as a detailed breakdown of how the amount is allocated monthly towards the outstanding amount? I did not agree to a 6 year loan!! Is this how you keep South Africans impoverished by swindling us out of our hard earned cash!! Worst part is that your client services don't even respond to emails

I await your response. As I need to sort this out urgently.