$900 is a low number, although I am not a remediator, I actually help with giving protocols to these companies.
You need to find out what they will do.
Also, did they find the source of the problem and fix it. THis is HUGE!!!
Because you may have a future problem after paying for the remediation.
For your clothes, get them cleaned professionally.
Be sure to seal the closet with blue tape and visqueen so the spores don't expand.
If you need help, go to YouTube and check this video on what
Mold Remediation Video supplies you need for your mold remediation.
Have a mold problem? You do not need certification to get it done yourself, free helpful advice on doing your own mold remediation at
http://www.moldmanuscript.com