Incorrect contract migration

I requested a contract change as my 2 contract was over and I as not ready to upgrade to a new phone just yet. I wanted the lowest monthly amount and was advised that I can be migrated from Anytime 200 to Anytime 50. I wanted to stay on the same contract type as I have built up over a R1000 worth of airtime and did not want to loose all of it. <br> <br> The migration was done and after I received my first bill I noticed that I was migrated to the Choice 50 contract and that I've lost all my airtime. When *****ing this I was told that I signed the migration for this. I have ALL the email correspondence and nowhere did I request this.<br> <br> I have the migration form and yes I did sign it BUT the form was completed by Autopage and they decided to change my request. I admit I should have read everything like one always does on these types of forms. Silly me for trusting that my request would be carried out. <br> <br> Where to from here I do not know.