Fraudulent Activity on my agent managed account

Up until last year I relied on an agent to submit my tax return, during this time the name on my account was changed and money was fraudulently taken from my account as repayments. There is a name and bank details attached to the activity - I notified the HMRC in January, and was told that this would be investigated. If I call to chase it up I'm told to wait until someone contacts me, police and financial ombudsman say that the HMRC is outside of their jurisdiction. How can this investigation take so long? Now being told that it's time to submit my next return...

Hi,

If you have contacted HMRC to report the fraudulent claims then a referral would be sent to have this reviewed. The department dealing with the reivew will contact you by letter. 

Thank you.