I had this number appear on my account info 20 times since December (about 2 month).  From what others here have said, I think it is a number that shows up from Rogers if someone calls, and you don't answer, telemarketer, friends, family etc.  I recently activated my Voicemail, which I didn't know I had that option.  I have never received an actual voicemail.  It wasn't until I saw these charges on my account that I realised I was being charged for voicemails, but not even getting any voicemails.
I took the advice of others here, and dialed *611, then 3, and continued on the automated Rogers customer helps, to get my Voicemail Canceled.  I think it wake option 4 on one of the menus.  It asks if you are sure you want to cancel your voicemails and box, then to confirm.  I was charged for 20 voicemails calls at .40 cents each, that's $8.00.  Not happy.  So, now I'm happier with not voicemail, that I don't miss anyway, and now I don't have to worry about getting charged again.  I hope that makes sense and helps.  Feb. 19, 2014