Super bad service

I was recently at you main store in canal walk and my God what an experience the lady who was suppose to help me Nholwazi(spelling might be wrong) caused so much problems since then she canceled the wrong contract after me repeating myself which led her to getting irritated and calling one of her colleagues to rather explain to me even at that point I tried making sure she was canceling the right contract since I have 3, the contract she canceled was my data contract which I use daily this sim card had data that was carrying over every month something which I pay for I went to 3 different telkom branches and instead of someone trying to fix this issue cause all my data I paid for was gone I'm having to drive to different stores they all insisting I take a new contract which I then have to pay for again and pay activation fee, I dealt with telkom for some time now and I know if payments are late by a minute you will recieve a phone call why is it after sending emails and going in store no one has tried to make contact or fix this problem also should I really be liable to pay for anything if the data I had was just thron away by an we employee who refused to listen to what I was saying