We are an existing IBM customer since 2016, we have configured some cloud servers to serve our customer & we are doing that by configuring the servers as per customer requirement by ourselves.

In the past we had a situation when we have increased the monthly public bandwidth usage from 250 Gb to 1000 Gb per server & we have charged $45 monthly for this from IBM. Now, we are transferring all our data through private network & as a result our monthly allotted 1000 Gb bandwidth is useless. We need to reduce the plan & need to configure the monthly bandwidth to 250 Gb from 1000 Gb. We have requested several times, raised many tickets but didn't resolve the issue yet. Support team resolved the ticket CS4252717 without providing any resolution. #CS4234780, #CS4240857 are some other tickets on the same issue, they are still pending or resolved without giving resolution. 

Please check & tell us how we could decrease the monthly public bandwidth usage from 1000 Gb to 250 Gb. We have checked the "Public bandwidth allocation" option under 

"Instance details" & tried from there to decrease but we found we can only increase from here; we cannot decrease the public bandwidth usage from here.