DH owes them money. We do not dispute that.
WE would like them to give us a correct bill of how much he owes.
He estimates that he owes £7K. Their bills have all been from £10K to £13K.
The first bill was £10K which included a student loan. He left uni in 1989 iirc so no chance. The guy recalculated his bill removing the student loan and then came up with a higher figure.
Now he is getting calls from their debt collecting department but the bill is in dispute.
What to do next?