CH360
Level 3

"Online Banking Administration" user is randomly creating suppliers automatically when it syncs my accounts. How do I stop this?

Every so often, when I sync my bank account and credit cards, random suppliers are being created.
For example, I just synced now, and three suppliers have been added: Adobe, Costa Coffee, White Horse.
There were lots of transactions on the credit card, but only these three were created as suppliers. 
There are no transactions in these new suppliers at all.

The audit log shows that Online Banking Administration performed a manual sync, and then it shows 'Added supplier White Horse' at exactly the same time. Again, the audit log entry shows the User as 'Online Banking Administration'.

Previously, I've been renaming these random Suppliers to 'Z Deleted 1,2,etc', and then marking them as inactive, but every so often they reappear.
I now have around 15-20 of these extra suppliers which I can't actually permanently delete.

I spent an hour with support yesterday, but they basically just told me it was weird and couldn't have been their system that did it.

I even have some that were created during an automatic sync when I wasn't logged on to the system.
I wouldn't mind so much if I could actually delete the suppliers properly, but it's just polluting my data!

Any suggestions?