Hello my name is ***** ***** I will help you.
What is it you would like to know about this please?
Was it agreed in writing what they would charge?
Ok. Then all you need to pay is a reasonable fee for reasonable work done.
Therefore you don't need to pay above and beyond what the job is worth.
So no, you don't need to pay any more.
Can I clarify anything for you about this today please?
You can ignore them and email saying you do NOT accept these.
Does that clarify?Alex