Poor service

<p>I have had a data contract for more than a year. My subscription value was R189 a month. I have asked that my limit that i could spend to be zero over the 189, but the guy in store says that a R50 cap is minimum and after 3 months I can phone and let them make it zero...so after 3 months i phone in. The first time they said I cannot do it, then i phoned again and they said they have changed it to R1 limit, but nothing changed. I went in store again and asked it to be changed to R1 over limit...but still if goes to to R256 a month. I dont know what ti do. Please cancel my contract...I will pay the outstanding on the device</p>