Login details being labeled as incorrect, unable to post ads!!!! ANNOYING

I have been a seller and member for many years but recently my ads have been removed or it will allow me to post but there will be nothing in my ads that is pending etc. I have tried to enquire the reasoning behind this but no answer. Honestly I have been posting ads for years as a individual and I am well aware of the policies. To say that I am frustrated is an understatement. Please just allow me to log into my account again so that I can deactivate my account and be done.