Whatsapp API

We are looking for someone to integrate whatsapp api with our sql server database and do the following.

Dealers
i. See which product he had purchased earlier, and send offers for similar products

ii. Feedback for visit

iii. Feedback for call

iv. Customer Complaint Form (website)

v. Messages for new Videos

vi. One time discount to customer whose sales have dropped

vii. Customer Self Help Portal

End Users
i. Delivery messages / Offer Video Call Assistance

ii. Feedback for product

iii. Ticket based on poor feedback

iv. Google Reviews based on good feedback

v. Customer Complaint Form (website)

vi. Messages for new Videos

Team
i. Follow-ups reminders with customers

ii. Drop of sales to sales team

iii. Drop of sales from customers to sales team

iv. Task Reminders

v. Scorecard Updates