Being ********** by such a big company

I have 2 contracts with Cellc,one was due for renewal last year November but I called in as I wanted to go prepaid.Their retentions department retained me with talking a new contarct for R29 which will give me data and minutes.I havnt being receiving my statements.So yesterday I Received my statement and to my utter shock I have been paying R52 and some months even more for this R29 package I had.So I called in and was transferred to 4 different people with the last one hanging up on me.

all 4 agents could not explain why I was paying double for my package.This is a total rip is and I wanted a refund but I'm getting no Joy.This is **************** and I urge all their clients to check their statements as they might be getting ********** as well.