Odor problem where to have my machine serviced for the problem of odor

Try this first: Be sure your using HE laundry det. only use the recommended amount on the bottle, I use the liquid, the less the better, I use the least amount.....To much soap left in clothes can cause mildew and stinky smell, also I recommend using a fabric softner, it helps to remove the soap....and smells good....also use a good washer cleaner, I use Affresh, they come in tablets, go to www.affresh.com and put in you zipcode to find where you can purchase it in you area......make sure after a load is finished that it doesn't sit in the tub with the lid down for long, removing the laundry promptly will also help with stinky laundry........use the Affresh at least once a month.......hope this helps you