Cashe — Repayment not reflecting

I paid my due before the due date and i pay through Google pay but still I'm getting notifications that my due is not paid i tried to connect with customer care but I'm not getting any response from them i dropped more than 10mails but I'm not getting any update from them it's worst then today i got call from someone he said he's from cashe he asked me to pay 5rs for the complaint registeration then later he asked me to install any desk i denied then he started using abusive language