Glo bis comonth subscription increased.

Just recently my subscription expired and so I recharged 1000, and text comonth to 777, and behold I got a reply saying.
Sorry, you do not have enough credit. Please recharge your line and Dial *777# to buy a BB Plan. I was amazed because I'd always renewed my subscription using this process, so I decided to recharge another 500, and retried it and it worked, I was left with 100naira my account balance, that means the subscription fees have been increased from 1000 to 1400.
      I know this is news that no one wants to hear especially those using Android that tweak their imei, but hey who can complain, it's still cheaper than other android sub.
     But Glo did a poor job not informing their customers.