Bulk Viber Data Import Setup

I have an Excel file containing more than 5000 customer records that need to be added to Viber. I don’t just want one large broadcast list—I need these contacts neatly segmented into multiple groups so future messaging remains targeted and manageable... (Budget: $1500 - $3000 USD, Jobs: API, Automation, Data Management, Database Management, Excel, Excel Macros, Excel VBA, Scripting)