[mhw]

It depends what you mean when you say 'support queries' - I'm guessing it's more than just someone not understanding how a new feature works. Here are some possibilities for what you're experiencing:

* 'support queries' are actually bug reports: you're getting something wrong with your automated testing that's letting bugs get out into released code. Ideally you should have acceptance tests that make sure the code is doing what it should before you release it. Check what your team's criteria for 'Done' is - are they cutting corners to get things out the door?

* 'support queries' are actually missing functionality in new features: you're not getting all the requirements for the feature in the sprint where you implement it. You need to make sure the conversation with the product owner covers everything that the feature (user story) should do.

* 'support queries' are actually new feature requests: they should go in to the backlog and be prioritised along with everything else. You shouldn't let people push work into a sprint that hasn't been prioritised by the product owner.