You can erase everything Ruko holds about you in one WhatsApp message.
Email support@rukozara.com from any address with your WhatsApp number. We delete it within 7 days and reply to confirm.
Send stop to Ruko. You won't get any more alerts and your number is removed from everyone's family list.
If you bought the Family Plan, Dodo Payments keeps its own payment records as tax law requires. Cancel the plan first so you aren't charged again.