Ummmm:
I hope you have more luck paying your mortgage off than I did. Several months after handing over a banker's draft for over thirty grand to the Woolwich, I got a shirty letter from them, telling me that they were about to repossess my house because I'd not been making any mortgage repayments.
When I got them to hunt for the missing payment (which had definitely left my bank account), they apologised for their error and then demanded over two hundred quid to pay off the interest that had built up between me handing over the money and them actually crediting it to my account. i.e. they expected me to pay them for THEIR error!
When I protested they said "Sorry, there's nothing we can do about it now. You'll have to pay us the interest". When I threatened to take my story to the press though, they suddenly changed their mind!
About a decade later, I wanted to sell part of my garden to my neighbour, only for our joint solicitor to tell me that the sale couldn't go through because the Land Registry records showed that the Woolwich still had a charge registered against my property! As the Woolwich no longer existed by then, I had a battle to find someone at Barclays (who'd taken over the Woolwich) who could get the charge lifted.