Hello my name is Alex and I will help you with this. Please note that I am a working Solicitor and may be on and offline as I have to attend Court and meet with clients, even at weekends. As such you may not get an instant response when you reply as this is not an ‘on demand’ live service, but rest assured I will be giving your question my immediate attention upon return. There is no need to wait here, you will get an email when I reply.
Yes, if you have sent the payment with a letter saying full and final settlement that is the end of the matter.
The contractor can not now go back on this - because it is a settlement of a contract
That settlement is binding
Therefore full and final settlement means no going back
You should write to the debt collection company with a copy of the letter and set out it was settled.
Can I clarify anything for you about this today please?