purchasing a property and secured mortgage offer a little while ago before all the madness. Initially had paperwork saying expired end of sept. Then had paperwork last month saying end of October. I always had end of sept in my head but then I saw new papers I thought I must have misread. We are now almost ready to complete and they have said this is was a computer glitch and we need to choose a new product. This will be x3 our original rate and make it unaffordable. Help!