Inadequate staff

I renewed my contract at Telkom Kenilworth Centre. explanation from sales lay I will wait 24hr on reply. I waited 3 working days. went to collect phone they told me the sales lady told me wrong. 5 days later I returned the phone due to heating up.....I was told I need to wait 7 to 10 days for report before issuing a new phone, as was explain to me on day 1 that if anything is wrong with phone within 7 days they replace phone immediately. again the apologize for wrong information. I ask for area manager contact details they not allow but I can send a mail, I send mail again on Wednesday 26th January 206 they informed me my phone was returned & nothing is wrong. I decided to cancelled my contract... went into the shop spoke to manager, she told me I might pay R800.00 for cancellation fee. she told me the manager will contact me yesterday 27th January. he still didn't. I phone the branch in Kenilworth , the manager told me its out of her hands I must wait for the area manager to contact me. Can anyone assist me please I use my phone for my work mostly......