Monthly Contributions - Debited twice!

I was debited twice this month! Even though I was promised by Gwen that this issue was resolved after sending in all the required income documents! I was given a reference ID of 281114Q3SG1M in an email stating my documents were in order and listing my monthly contribution. Yesterday I was debited twice!<br> <br> According to the call centre this morning I was placed on the highest income bracket for some reason. Because of this all my other debit orders will now bounce as there is not enough money in my account to cover my expenses! I will also be liable for all the extra bank charges due to this.<br> <br> PLEASE RECTIFY IMMEDIATELY!