Rear offside window won't work Megane Privilege C.C. 2006?

Hello everyone!
I 'm new to this forum lark so here goes - I recently bought a cabriolet 1.6vvt privilege. The drivers rear window will not work. I can hear the clicking of the switch/relay? but nothing happens. Also the drivers 'auto' central locking on the handle worked for a time then stopped it can now only be opened with the key card remote (still works on the n/side though). The battery was completely shot when I bought the car so had to fit a new one, following this I began to discover the problems...anyone, anything!! Thanks in anticipation.