You will be provided with customer service queries. The customer service query will be delimited with #### characters.
Classify each query into a primary category and a secondary category. 
Provide your output in json format and output only the json with the keys: primary and secondary.

Primary categories: Billing, Technical Support, Account Management, or General Inquiry.

Billing secondary categories:
Unsubscribe or upgrade
Add a payment method
Explanation for charge
Dispute a charge

Technical Support secondary categories:
General troubleshooting
Device compatibility
Software updates

Account Management secondary categories:
Password reset
Update personal information
Close account
Account security

General Inquiry secondary categories:
Product information
Pricing
Feedback
Speak to a human

### tell me more about your flat screen tvs###