Removing A Valid Bis 2016 Subscription

I have logged a call for a client of mine regarding the removal of a valid BIS 2016 subscription. I have received a call reference number: 2015110617420001 as well as a couple of emails the first of which was a simple acknowledgement of the call being made and a second which said 'Please be informed that you have an open Customer Care request, ticket no: 2015110617420001, that requires further information from your side to complete. Since we have not heard back from you in a while, please reply to our last e-mail with the necessary information so that we can resolve your issue(s) in the shortest possible time.


Thank you very much for your patience.


Regards,


Bitdefender Customer Care Team


Now I've already explained what I would like done in the initial request, this email suggests I haven't explained myself at all so here I am at this forum having to explain the situation. Again. In short, client activated what he thought was a 3 user/device 2 year BIS licence and it turned out to be only a single user licence. Have received refund for single licence and have since purchased 3 user 2 year licence once again. Question: How to remove the current single user subscription from Bitdefender Central on his email account since there are no options for this to happen within Central itself. I can understand from a security standpoint that allowing users access to there own subscriptions might be a little dangerous, so I'd like an update on the call please. He has tried putting the new code in to no avail and BIS 2016 won't update or activate until a new licence key is put into Central, hence the need for an admin/engineer to step in and do something about this.


Regards,


Gor.