Section 8 raise rents

[Tomas Giro]

I have a house in the St Clair county. The average rents are for 1000 USD but I have a section 8 property at 650. I want to raise the rents to section 8 but they don't answer my emails or calls, and it's been months. 

Is there a strategy to raise the rents.  Would it be advisable to remove the house from section 8 and then put it back?

Thank you,

Tomas