Device not picked up for 4 months! Misled!

Taken yet another upgrade with Vodacom, misled in terms of device, data and monthly subscription. Called and spoke to 2 consultants who advised that they will callback with feedback, a whole month gone and nobody called. Called today, explained, the guy transferred me to retentions, they then just dropped the call!! Pathetic service VODACOM!! Someone needs to call me and resolve this issue! Phillip contacted me advising that he would resolve my issue. It's been 4 months now, device still hasn't been collected, still paying for a device I cannot use and for data I do not receive. I call Phillip and he promises to get the device picked up, weeks go by and still nothing happens! Really disappointed with Vodacom, seriously considering cancelling my contract!