Upon investigation here CX, the recent promotion which is the $33.34 was removed due to the system issue. This issue happen in rare scenario, the good thing is there is no any changes on your account aside from the promotion. The best thing we can do is I will process to apply an adjustment to your account to cover the $33.34 for this month and rest assured I will re-process to apply the recent promotion to your account so that your bill will stay as it is. 
 
Do you have any clarification on these?