No response on settlement of accounts

I received a call from Blake attorneys and not long thereafter asked for a settlement letter. <br> <br> I made the payment on the 17th of March 2016, I have sent numerous requests requesting a letter showing that my account has been settled and closed and my credit score has been updated. <br> <br> I still have not received any response. <br> <br> I did however get a call from one of the Blake attorneys consultants where they also wanted to know when I will be paying my account after I have sent the proof of payment through. <br> <br> This is unacceptable and I am tired of unnecessary calls and no response on the paid account.