RCS bad communication

I’m very disappointed with RCS and Game, I have a RCS card with Game. I made a payment on my account at Game store, 2 weeks later RCS continued sending me reminders about the payment not made, even penalised me for missing payment. When I called them to fix this, they said I must send proof of payment, till this day no one is getting back to me, instead I’m being sent notifications telling me I need to make payment. No one knows where my money went and I need answers