Pathetic Services by Voacom

I have been getting the worst service ever from Vodacom. I took out a contract with them the phone arrived on the 8th of May.When the phone arrived i noticed it had a problem it was open on the side and when i charge it the battery would not be full.I called them to return the phone on the 28/29 May thy collected the phone, i called them on the 6th June to cancel the contract they told me i must wait 7/10 days to cancel.I called on the 15th that whole week they agents would put me on hold then drop the call the next one would tell me they have system problem.I have been calling trying to cancel this contact today i called again they said they will transfer me to another department were i they voice prompt told me my number was blocked so my call could not go through cause i have been calling numerous times they suspect *****. What the HELL i a so frustrated i have never got such poor prophetic service ever.When i send them a chat it tells me to call the call center how cause they blocked y number.I again went to they live chat were Tobi told me i will be charged a penalty for WHAT ? I will never ever recommend them to anyone i want that contract cancelled ASAP