Under Investigation Tried to get my account but i don't see any money

How to Report a Dispute
Please fill out all 9 questions below. You must provide proof or your claim cannot be validated.

1. Date Dispute Happened
23rd September 2017

2. Are You The Buyer or Seller
I'm the seller

3. Total Transaction Value
$140 USD

4. Other Parties Username
Ultralit

5. Method Used To Pay or Receive Payment
I didn't receive any payment or notification in any way

6. Other Parties Email Addresses
see 5.

7. Other Parties Payment Email Address
see 5.

8. Other Parties Messenger Username
Line: Ultra_lit

9. Provide All Chat Logs and Additional Information Below
Some Admin or Middleman just has to tell me if he used the buy now option or not. I didn't get any notification so either he is lying or this site doesn't work properly