Yeap, skitto gives you total control of your pay as you go usage, so even while you are using pay as you go, you can change your monthly limit.
What happens if you set your limit lower than the amount you have used up:
Suppose your previous pay as you go limit was tk 4 and after you have used up tk 3, you decrease your limit to tk 2. In this case, you will not be able to use pay as you go for the month as you have already consumed more than your new limit.
Your pay as you go limit will be refreshed again on the first day of the next month.
What happens if you set your limit over the amount you have used up:
Once again, let’s assume you had tk 3 as your monthly pay as you go limit. After you have used up tk 3, if you want to consume more, then simply go to settings and increase your monthly limit above 3. Now you will be able to continue surfing the web. By the way, the maximum monthly limit you can set is tk 5.
IMPORTANT: every time you change your pay as you go limits you have to turn your phone internet off and then on again.