That was a long time ago and was likely true at the time, or at least what the HD was told by whoever in admin was responsible.
It may have been the intent back then that they were temporary, but if there were supply problems and in the absence of many formal complaints, the powers that be may have decided to save money by abandoning the replacements.
Who knows, but there's no need to be so aggressive in criticism of fault when no one knows the whole story.
The more 'official' complaints they get, perhaps they'll re-evaluate the priority.