upgrading was done wrong

On 1st May, me and father upgraded to uchoose flexi 110 and also specially asked consultant if he did it right a lot of times and he said yes. Next day we get sms that it was upgraded to uchoose flexi 55. So i phoned customer care on 2 May and consultant on 5 May and they said its on flexi 110. On 31 may got sms saying still on flexi 55, i phoned upgrades department and they said can't help. me and father went to store and they said will fix on the 1 June by reversing flexi 55 and change to right one flexi 110. It's 4 June and still no update or problem not sorted. I phoned store and get excuses all the time. We are getting very angry and feel like to leave Vodacom. Can anyone help us?