Apple Do not buy pre-owned Apple Products! Cupertino California

I am a poor person on a limited income, social security and a modest pension.  I wanted quality but could not afford to buy new so I settled for pre-owned Apple products (2).  An iPhone and a MacBook-Air lap top.  Oh, did I error in that decision.  There is support for them at Apple but you cannot reach Apple to get that support unless you want to pay throught the nose! Facts: I could not connect with Apple to change my email address and when I tried to contact Apple to change my email address and password of course I hit a stone wall!  I finally got a support techician who took over control of my lap top and my iPhone and after a time informed me that they were both loaded with extraneous data from the previous owners and that is why I could not connect with Apple support!  They wanted $600.00 US dollars to wipe both products!  That cost went way over my head and there is no way I can ever afford that!  So my message to anyone reading this, think twice before you purchase any Apple product that was pre-owned!