Billed for extra product I do not even have, want or requested for!

I have tried contacting rain multiple times regarding billing queries, can't get through to them via call and never receive any actual feedback via email, just an automated response saying they will get back to you which they never do. I am using their rainOne service and I am still being billed for the previous service being the 4G uncapped data sim which I have not used in years. I never once told the sales consultant to reactivate that service. If these types of problems persist I will switch to a different service provider. Hope to get an actual response or call back from the billing department.