The insurance being cancelled I can understand, if they have paid out. But was your tax due to expire end of August? And not on continuous DD?
Did the DVLA acknowledge receipt of your request?
Just trying to establish if DVLA cancelled it or if it was due to expire anyway. Mainly because my BIL had similar. Sent off the scrap notice. 3 months later the DVLA sent him a notice for no tax and insurance, even though they acknowledged receipt of the V5 section previously.