Disgusted - New Contract cancellation

I am so dissapointed with Telkom. I app**** for a 4gig 24months deal and later realised that they have a November special for 20gig @ R139. I then app**** for the latter and when the sales rep called i then asked her to cancel the 4gig contract. She said she cannot do it on her side and that i would have to call 10213. After our call she said they would call me to confirm delivery before dispatch of the 4gig sim so im unsuccessful with calling 10213 i can then cancel. I have called telkom more than 10 times this morning, being dragged from pillar to post. Each consultant tells me they cant assist and i have to call a different number 081180 . I have been calling both numbers all day with no assistance. I am very disgusted with the level of professionalism or lack thereof. I just want to cancel the freaken contract . How hard can that possibly be!1