Bad customer service as soon as they receive their payment.

I am typing this with tears rolling down my cheeks.I am shattered.I dont know what to do anymore. I made arrangements to pay my Homechoice account with hammond pole attorney which i did until i finished paying in May.All along i have been communicating with them and everything was fine.In the middle of my payments i emailed Mr Thabo Moleke and asked about the process to remove my name from the credit bureaux and he explained to me that i have to finish my installment then my name will be cleared.I did so and finished in May.Immediately after paying i started calling them to send me the paid up letter and there was always an excuse.Its either they will get someone to sent it or others just hang up in my ear..Everyday when i call i get a different person ,explain my story and hope for an assistance but even now im still waiting..Yesterday i received a harrassment email saying i never made any arrangements for my account .I called them and they said it was a mistake and they will send me my letter.,even now im still waiting..I am very disappointed about the treatment im receiving .It can sound like just a letter to Hammond pole but to me it means everything.I cannot clear my name,i cannot do anything without the letter.This matter is really affecting my wellbeing.My emails are no longer responded to like before,Calls are answered but no one is willing to help.