network related issues

please explain why when I'm trying to use the mobile internet it keeps disconnecting me and then I have to reboot the device to get the network connection back I called in and spoke to a consultant that took down all my details then put me on hold after that she dialed a number to which a voicemail message played and then never responded back you paying people to do a job yet they don't do it, and If I don't pay my account I get handed over this is so frustrating you guys breach contract and its fine client can't do anything, yet when the client breaches their obligations then they get demands and handed over yet your service center is pathetic and only there to ***** money I might as well go somewhere else since this network is just ****.