Trade Creditors

So I  have taken on a Franchise and basically they receive into bank what's left after all expenses and cost of sales are paid.

I can balance everything on paper no problem, however my trade creditors and cost of sales are showing the transactions.

I have entered the purchase Invoices for Vat purposes , amounts are all correct - should i journal trade creditors as it should be NIL, but what would be the other end of the journal.

Also when i do the journal between trade debtors for the head office and sales , it won't show on P&L. 

Thanks in advance, any help is appreciated.