Hi Antonio,
Sorry for the delay.
Here I see two possibilities may be the managing my area is assigned previously to you receptionist and that time may be the task must have been sent to her to approve, try checking in the changes tab Application & user management work center > Select User > Edit Access rights > changes.
If this right you can recall the expense report & resubmit and the task will not go any further.
Else we need to check the system what is happening. Kindly report the incident.
Thanks
Lokesh Sharma
