Complain about bad service from rain mobile

Good day My issue with rain is that I bought a sim card and mifi router from them (delivery date was 6th September 2018)and i was promised 30 days free unlimited data and I was told that i ordered two sim cards upon delivery i enquired about two sim cards and a consultant told me that I can use the one that was acticvated .To my suprise on the 27th September 2018 I saw a huge amount on their dash board that i was owing . I raised this issue with them and to date the issue is not resolved and they are busy trying to take money from my account and they are refusing to share all my telephones calls with me . I told them repeatly that their consultants dont provide adequate information to new clients and I was mis informed.

I have reference numbers regarding my issue (*** &96374) . I seems like i am not being assisted by this company