Hello neutralIC
Maybe write to them one more time, informing them that you will request a charge-back from your card provider on the grounds of non delivery of service? Ideally, you want your ad back up rather than money returned, unless you have decided to drop them as a listing.
I suspect since the raid they cannot get good staff, and there is one lone grungy flake of a guy logging in once in a while to get keep things ticking over remotely.