Feedback on Green Geeks Host wanted

I am not a pro Web developer. I have built maybe twenty sites for myself. On the same token however I probably have troubleshooting and programming skills that are above the average employee at a seven eleven store, I hope.

I have had the following issues at Green Geeks recently.

Issue#1
On my account jpeg images for two different sites at two different times of the year just seemed to vanish.

Issue#2
On my friends account, I built a site for him and it got hacked by some mother ******* from Turkey according to their message that was displayed by changing index.html and other changes also.

I have never experienced these issues in the past when hosting with other companies. Green Geeks reply was that my problem was a design error. That the site could not find the jpeg images.

Really ? design issue ? It worked perfect for a month and I did not even log in for a period of time when this happened. It's not a design issue, the ******* files are not in the directory anymore.

Any feedback would be interesting to hear. Thanks in advance.