Vendor name same as Customer name????

Why when I have the same name for a customer as a vendor that the check
payment on the vendor side goes to the sale (income) side of my item instead
of the purchase (expense side)? I am choosing the vendor name when issuing a
check, but when I choose the vendor name somehow it changes to the customer
name of that person. How do I correct this issue?
Note:
The item on the check works fine if it is only a vendor and not a customer.

 

A type of placing used as a method of financing a takeover in which the purchasing company issues its own shares as payment to the company being bought, with the prearranged agreement that these shares are then placed with investors in exchange for cash

 

The Answer

@addy digit
That was read out of a book and doesn't answer the question.


@Akita
The answer is that you have to scroll down further in the list. You are indeed selecting the wrong entity (customer). I have seen this happen many times. You believe you are selecting the correct one when that is not truely the case.