Not Happy with My Service Provider...AGAIN!!!!

I cannot send out sms's and there is about an 8 hour lag time and I receive a message saying failed. I have been told that recipients are receiving my sms's but only about 8 hours later. Any sms's sent to me, I am only receiving about 5 days later. I have called in about 5 times over the last 3 weeks, with no help whatsoever. I received an sms from Vodacom (probably a week old) from Craig-Paul Solomons saying I must switch my phone off and back on and all will be sorted. To NO avail. I then went into Fourways Vodacom and I was told to purchase a sim switch which I had to pay R70 and was assured that I would start receiving sms's. My problem was still not sorted out. I then went back to Vodacom in Fourways and was told that they cannot help me as they were down. Nobody has bothered contacting me. This is interfering with my business and I am really at the end of my tether. This is a network problem and can somebody from Vodacom PLEASE sort this out!!!!!! I am extremely unhappy at the lack of urgency and that I am now entering my fourth week of not being able to send or receive sms's.. Absolutely Shocking service Vodacom!!!