Incorrect billing, phone and not working

They do not help customers properly:<br> <br> (1) phone number isn't working<br> - being billed for not using number = ****************<br> - consultants do not reply to emails<br> - customer care do not reply to emails<br> <br> (2) new phone battery doesn't work properly<br> - How can you still bill me on device charges??<br> <br> (3) customer care do not reply to mails...what's the point??<br> <br> (4) courier services - do not call in advance or give a n estimated time! They also call from pvt numbers - how are we supposed to return calls ??!<br> <br> (5) spend all my time on this at my expense<br> <br> (6) Poor service - Poor service at call centre/ No feedback received<br>