No compliance

Good day i would like to write a letter of complaint against NDC agent name Muhle Maswanganye works at Hadefields office park block B 1267 Pretoruis street , Hatfield . My complaint is about a payment arrangement of my Markham's account , that i specifically asked to for an account to make payments and she refused to do so and said the only way to do that is when i make the full payment on the day of 11/15/2024 of which i told her its not possible unless i can make a monthly payment to closed of the account . I hanged the call and got a what's app of a letter of demand with 7 days meaning if i don't make a full payment of R1447.45+315 off legal fees. IS THIS HOW YOU GUYS TREAT CUSTOMERS ? I then asked the same agent on what's app me i told her i tried to make arrangement she still refused i told her am going to report the matter to hello peter and she said GOOD LUCK . i then got a second call from another agent who help make a 3 month arrangement.