Debit card payments deducted after 3weeks!!!!

So I had a few rand left for this week before payday, and all of a sudden purchases from the 26th of March till 01st April went of on Friday 17th April.

I had one pending transaction for R133.24...which was the amount between my available balance and my balance.

Now I am sitting in with an outstanding amount,and nothing to help through this week.

Which mean you will never know what is exactly in your account...

Must be the worst decision I have ever made to move to FNB.