Cancellation fee enforced when I don't want to cancel

I am livered by the service I've received. I have been with them for a couple of months and on a monthly basis they are offline leaving me without internet for 2 - 3 days, when I complained they sent out a technician at a time when there was no one at home after I distinctly told them that. I am currently moving and am told to cancel, pay a fee of over R2000 and reapply of which makes no sense to me as I have a month to month contract. I still want the.fiber just need it ported like all the other places do. I do not have that kind of money and this was never explained to me or I would have never taken it knowing that my lease was ending.