Robust, Customized CRM Development

1. I need a CRM for Manage my Client Contact Details (Company Name, Phone, Phone 2, Phone 3, Phone 4, Phone 5, Contact Person 1, 2,…5. Email1, Email 2, Email 3, State, City, Sister concern (company) – 10K contacts 2... (Budget: ₹1500 - ₹12500 INR, Jobs: API Integration, CRM, Database Management, MySQL, PHP, Software Architecture, Software Development, Web Development)