Contract was suppose to be pay as you go but open

Saturday we went to the Grove to merge a pay as you go contract onto a MTN anytime 50 Top up with a monthly payment of R79. I got no papers to sign and was advised that they will contact me when it has been done. Today my normal contract phone was suspended upon phoning I was told I had reached my threshold of R1800. I asked why and was told I had an open contract associated with the number that was migrated to my account over the weekend. That was NOT what I had asked for. The consultant had completely messed up and now I am taking the beating. I want that corrected immediately as I specifically did NOT want an open contract and told them that. All costs incurred over the R55 airtime I am entitled to must be voided or charged to the consultant that handled the application.