Bad systems and customer query resolve all round

I am once again confused by in ability of Rain to resolve my query which started 20 September 2019. My limit is 3gig. When i go into rain dashboard, it advises i have not used any peak data. However Rain sent and billed me 2nd month in a row for 8gig of data also advising i have used in excess of 8gig. I have emails confirming correspondence back and forth with absolutely no resolve around this matter.