Issue resolved - Says Who Vodacom?

I've battled with data/connectivity/dropped calls since February. A chap came and assessed the situation and told me he would make recommendations and report back. The only "report back" I've received is an SMS on 20 June to tell me the issue has been resolved... SAYS WHO? I'm still battling with the identical issues - no one has reported back as to what has been done... How can you say it has been resolved? Please contact me.