disgusting financial provider

I took R400 loan on May 2025 which was once off payment option. they debt their money as per agreement .but till today it show as I didn't pay them under my credit status.i call them,whatsapp them, email them asking for them to clear my name or update it they always promise but nothing change. I ask for my paid up letter so that I can dispute it under my credit report they promise to email it . till today I'm still waiting the only thing they are doing they offer me loans if promise me shoprite voucher if I took loan with them .