national support solutions fraudulent, dishonest, scam, thieves Lake Worth Florida

I signed National Support Solutions, a tech online company. They are to maintain your computer. I bought the lifetime subscription $250 plus Defender Pro again lifetime $750.

At first things were fine except they wouldn't give me the Auth. key for defender. I got hacked but without code I couldn't reinstall defender. I contacted Defender Pro they explain that I had purchased it from NSS. 

Over the last 5 months they have not responded to multiple texts, emails or voice mails. The last 2 weeks before they went silent, I was called a liar & to stop calling. They were a company which would take control of your computer & do the work. the last time they worked on my computer a screen comes up, Tech is working. After 5 hours I take screen down and find the tech had closed session 4 hours ago, simply left screen up and did not complete the work.

I am disabled, live on fix income, had to borrow money to buy protection software. I am asking for a refund of $1000 or at least the $750 for Defender Pro which is no longer on my computer.