8 Weeks turn to 3 months

I gave my cell phone in for repairs as the phone just died for no reason and it does not want to charge. The lady explain to me it is a software problem and it will take 8 weeks to fix. This was on the 03/11/2014. I went back there after 2 months and the lady said she will phone me back. She did not get back to me. I phone on the 27 January 2015 to find out what is going on as I have not received my phone back or any feedback. The lady said I must pay a fee for water damage but my phone was never close to water. I explain that to her and she said she will get back to me on Wednesday. On Wednesday I went there and the lady said she is still waiting for feedback. I try to phone head office but the phone was dropped by them after I was transferred to the relevant dept and I was holding for 20 minutes. I still up to date do not received anymore feedback.