It does not take 75 days to view your past years returns in Turbo Tax. Did you file with the Free Edition in 2016? or did you use a paid version, if you used a paid version you should be able to see your past returns under previous years taxes, if you used the free edition you will have to pay 29.99 for the Plus so you can get a copy of your 2016 return. Have you tried calling Turbo Tax representative to help you? Maybe you should download a copy of your return each year onto your own computer to always keep a record for yourself, therefore you would not have to ask anyone for them. I always download my returns each year so I have access just in case I need them.
