Not honering contract nor responding to my enquiry regarding the matter

<p>I upgraded in February to a new South African phone, was told this is a great deal and phone, 7months later my speaker has packed up and the company making my phone cannot be reached.</p> <p>My contract states if any problem is reported with this phone they collect and replace it within 24hours, now cell c tells me they cant help me they need to send my phone away for 3 weeks minimum to see if they can fix it.</p> <p>I enquired a week ago and still have not had feedback?</p> <p>Cell c's servise has gotten worse in the past 7years i have had my contracts with them:(</p>