I just re-read your initial post.
If your creditors are still harassing you even though you have a settlement, I would do two things (just to make sure).
1) Call you creditors directly (i.e. you make the call, rather than talking to one of the yahoos harassing you who are probably just kids on a commission). Make sure that the creditors have accepted the settlement that you are now paying for. If the creditors don't agree that you have a settlement... then you have a big problem (that you should take care of right away before you send any more money).
2) Once you have made sure that the settlement is legitimate (by talking to the creditors), you can tell them not to call you. (Actually you can tell them to stop harassing you anyway, but since checking to make sure you actually have a settlement is so important that you should do that first).
If you tell them clearly and directly "Do not call this number again". They have to stop calling you. This is the law (there are strong anti-harassment laws)... and you can sue them if they keep harassing you. Almost always as soon as they know you know the law, they will stop calling you (other than risk problems form themselves).