Celluar network that can't provide

<p>I have recently changed from a pre-paid account to a contract with cell c. I now had to deal with my signal dropping constantly, no matter what setting my phone is on, my calls are barely audible, i have issues with the sim card slipping as they don't create them the same size anymore and to top it all off, when you complain about a problem it does not get solved and the same problem arises with the new month. I never had this problem when on pre-paid and I don't see why these problems would only occur now, the same problems are happenin with my sister who had done the same thing. very annoyed</p>