Urgent Annual Billing downgrade seats - No response to ticket for 48 hours

Hello,

I want to downgrade seats to our annual subscription due to the non usage. I opened ticket #2145509 more than 48 hours back and there is no response.  For my account, I do not see any options to change seats. My renewal is coming up on Sept 26th and I would like my account seats get downgraded before that. 

Thanks

Kalyan