This past Christmas, I bought an Alcatel Pixi 4 that was locked to Telus and wanted to buy an unlock code for it. I tried almost all unlocked services which are recommended in this thread, none can come up with code except QuickPhoneUnlock.
They are not cheap but their code works the first time. The online chat is excellent as well, as the agent answered all my questions. I am not a newbie in unlocking phones but I usually ask the same set of questions to get a feel of how competent the unlocker is.
All in all, if you cannot get a code for your phone, QuickPhoneUnlock is your rescue.