CCv5 Delete Cache is not deleting cache

Hi all

I have searched the forums about deleting the cache on CFV5 if you add a new field to the database. It should delete cache right?

1. The last time I did an edit to the table fields, I clicked "Delete Cache" and it worked. I editited this table below and now it is not working at all.
2. I have clicked delete cache in CF a number of times - not working
3. I selected all the forms in the list and deleted cache - not working
4. I selected all the CCv5 connections, clicked delete cache - not working
5. I deleted the original form, created a new one with the same name - not working
6. I deleted that form, created a new form, renamed the new form - not working
7. I have cleared Joomla cache - not working
8. I have logged out, cleared browser history, rebooted PC, deleted cache, deleted the database, built a new one - still not working
9. I have punched the keyboard, kicked the cat, shouted at the neighbour and started taking drugs to cope... still no change

I am using an script to update the table in the custom code to write this to another table... There is nothing wrong with the update script as I have tested it on another form with CF4 and it did work.

The delete cache worked once before, but not again.
The debug array still shows the following:

Array
(
    [chronoform] => User_Details_Required
    [event] => submit
    [first_name] => TestName
    [last_name] => TestSurname
    [submit] => Save
    [id] => 860
)

The new field names are:
I replaced "first_name" with "sender_first_name" and "last_name" with "sender_last_name" in the table, but it is still not updating only updates when I revert back to the field name. I need to find the issue, as I cannot update fields or add fields in three other forms I am building.

Is there anything I am doing wrong or is there a way to perhaps reset the cache manually?

I am hugely frustrated and am about to cry...

Thanks

Oh and I have waited over 24 hours as Max mentioned in one post to reset cache... Still nothing...