Remove HP+ from HP ENVY 6400

[mycommunityname]

When changing the IP of my HP 6400 ENVY printer, I regrettable and without actually  reading the disclaimer I accepted the HP+, and instant Ink.  
I have never used any of the services, or Ink. But now I have found, that by accepting HP+, I can ONLY use HP original Ink cartridges. 
I regret so terrible that I did not investigate further, what HP+ was. 
My question, is there a way to get out of the HP+ "program", so as I can use "compatible"  Ink cartridges, not from HP ?

When I called HP they said my printer was out of warranty so it would cost me $19.95 to troubleshoot to see if they could remove it from my account.  

Seems like a deceptive way for HP to get some money for a printer that is worth less than $60 and I know it is not my fault for not reading the pages of small print for the terms and conditions but it should be a simple task to remove this from my account.   I tried resetting to factory default and reinstall but not luck and  HP customer service was not helpful at all.  Anyone have any ideas?  

[Raj2111]

Hi @mycommunityname 

Welcome to the HP Support Community.

Thank you for posting your query. I will be glad to assist you.

I've sent you a private message with the instructions. In order to access your private messages, Click the Private message icon on the upper right corner of your HP Community profile Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link

Take care and have a good day.

-Regards

Raj-HP Support