Vodacom *****ing money

Vodacom takes our money for data and airtime, but do not give us the technology to enable us to successfully use their services. When you phone somebody they cannot see that you are phoning them, yet the phone on your side rings. When using internet I constantly jump between Hsupa, 3g and resolving host?? I have been complaining about this for the past 7 years, but nothing gets done. Vodacom, phoning me is not going to solve the issue........