Ignoring customer e-mails

It is sad to say that Vodacom customer care and it's appointed contractor have been ignoring my multiple e-mails sent for almost a month now, the contractor for 4 months!! For a client of Vodacom of almost 10 years to be treated like this is a real shame!! The Vodacom contractor arrived here on 8 April 2015 (also after I had to complain on HelloPeter for them to check our very weak signal strength) saying he'll send someone to put in signal boosters within 6-8 weeks. Needless to say we are still waiting and still paying our monthly bills to Vodacom. MTN took two weeks from complaint to result, but with Vodacom I've been struggling for almost a year now!