3 Months and Still no Responce

Purchased Nokia 205 on 16/7/15 couldn't down load. went in to care center PMB 22/07/15 and sent to JHB<br> returned 29/07/15 on inspection Camera was not working. so sent again by Care center to JHB asking for Repeat soft wear upgrade. Phone came back mid August. On its return Battery would only last 6 Hours and incoming phone calls would go straight to voice mail. so back to care center and back to JHB on 05/09/15. phone came back on 16/09/15 care center not happy with phone so they sent it back. still waiting. don't want that phone any more want replacement not being difficult but now being pushed from pillar to post no one has the authority to make a decision now i am speaking to a call center in Greece. HELP. phone belongs to a 76 year old lady who wants to stay connected but hasn't had the opportunity of using this phone as it has been in repair for the duration. what about the 7 Day return policy this is an OBF. Please HELP