What would you do about this hosting situation?

I have a friend with an account on a very popular host who also does internet marketing.

Their domains ALL have malware/javascript attacks on them.

I tried to contact my friend to let him know, but got no response it's 2AM on the other side of the world where they live.

So I did what I thought was best and sent a support ticket to the host saying that I noticed that these domains hosted on their service had this malware/javascript issue on them and that it should be resolved.

I get back an email saying I'm not a customer therefore they aren't looking into the issue.

I respond back letting them know that it's their server that has the problems on it and to provide good service they need to resolve the issue.

The support continued to say that since I'm not a customer they aren't resolving the issue.

What else can be done? Why would a host have problems like this and not want to take it seriously?

They are not taking it seriously because they simply don't care. I started a family owned hosting company and I work with people one on one.. I can help you with this if you want.. PM me and we can get the issues fixed and put inside a tightly secured server for you.

just PM me

It could be that since the real customer did not complain, what you were saying was not true. They are likely to do something when the customer sends a support ticket.

It did get resolved once my friend complained. They were not appreciative that their blog followers were all hit with a malicious javascript for over 12 hours causing lots of complaints and problems even though the hosting company knew the problem existed.

Hosting is being moved to a new company that cares about real people getting infected.

The company is obviously stupid, telling someone they are not a customer, only ensure that they never will be!
If someone takes the time to bring something strange to our attention, we will look into it. After all, as a web host, your product is just as important to your clients as it is to their users/clients.