WEBAFRICA made I mistake and I must SUFFER

I've been a Webafrica client for a couple of months and moved homes on 2 Feb. In December 2021 I called to make arrangements for our move and I explicitly asked the agent while whether there are any additional fees because of my move and she assured me there would be ZERO charges. I told her that if there is any charges then I'm surely moving to another IMMEDIATELY service provider - she confirmed there would be NO cost. Now this month, I get a bill of R3800...WebAfrica told me it's charges due to my move as I haven't been a client for 12months. This is the VERY reason why I asked the agent several times as I know these companies always have fine print that's not general knowledge to their clients. I cannot afford, NOR do I have the money to pay for this. My wife and myself work from home and my daughters does Online Schooling and study through Unisa. I cannot be held accountable for the mistake on Webafrica's side - it just is NOT fair. They keep on telling me it's unfortunate and 'sorry' but tell me I have to pay or else my services will be cut. This is how all these big companies treat their loyal clients. SAD