Paying for no service for the past three months

I haven't been able to use my sim card for the past three months and I have notified Rain about this almost everyday but nothing has been done about it. Now I want my money back that I have paid for the past three months without being assisted even after numerous attempts to try and get this issue resolved instead I am being sent from pillar to post with no resolution. This is the worst experience ever after being a customer for more than 4/5 years