Poor service provider Webafrica

I had an agreement with Webafrica for price matching when I first opened my fiber account with them. Before I moved premises a year ago I contacted them to ask if they can take my line over and they said they can't. But when I spoke to the sales person, she said that they will keep the price the same because of the agreement we had from when I opened my account. Last month I received an email to say that they can't keep it at the price I am paying and they are going to up the price with R200 a month. I am struggling to get hold of any management and asked more them 3 weeks that management must phone me and up to date no one phoned me back and is nou a month later and still no call back. They don't care about there customers and they are bad to deal with.