On November 15, 2024, various companies engaged in the following transactions:

1. Alpha Corporation sold $15,000 worth of merchandise on credit to Beta Enterprises.
2. Beta Enterprises returned $3,000 worth of defective merchandise to Alpha Corporation.
3. Gamma Inc. purchased $20,000 of office equipment on credit from Delta Suppliers.
4. Delta Suppliers provided $4,500 worth of office cleaning services to Epsilon Services on credit.
5. Epsilon Services paid $2,000 for maintenance and repair services provided by Zeta Maintenance.
6. Zeta Maintenance received $8,000 cash for services rendered to Theta Technologies.
7. Theta Technologies purchased $10,000 of software licenses from Iota Software on credit.
8. Iota Software granted a $1,200 discount to Theta Technologies for bulk purchase of software licenses.
9. Kappa Corporation paid $5,500 for legal services provided by Lambda Law Firm.
10. Lambda Law Firm received $3,000 in cash as a retainer fee for future legal services.

Please journalize these transactions for the respective companies involved.