Order Cancellation without consulting me

I Made an order for a Mweb Lte-A package 50gig for 299p/m. I received a sms stating that the order was cancelled due to bad coverage. I have checked there is coverage where I intend to use the product my Rica address however does not have coverage. I then phoned a mweb call centre they advised that I should resubmit the order online, the package that I signed up for was not available online anymore as the deal was cancelled. I phoned the call centre again they refused to help me resubmit the order and would only offer me more expensive packages. I made the order within the period of time that the deal was on offer and it was canceled without consulting me the reason being coverage something I confirmed before starting the sign up process.