R3500 installation fee to change from capped to uncapped!

We signed up to a 200GB capped fibre account with Cybersmart ( Lightspeed ) and paid a R1500 installation/activation fee and waited 4 months (not kidding) for the installation/activation to happen even though there were other apartments in the building with active connections.

We have now been told that to change to an uncapped account I will have to pay an additional R3500 once off for installation/activation even though the line is already installed and working.

Their justification is that the capped account and uncapped account cost the same amount per month, therefore I shouldnt complain. The person I spoke to on the phone told me that "That's just the way it is".

The capped and uncapped accounts DO NOT cost the same, they are essentially just taking upfront payment for what would have been the difference between the two. This also makes the contract no-longer month-to-month.

My main concern, and the reason for the review, is that they essentially have a monopoly in a lot of apartment blocks, and when the body corporate make the decision to allow them to operate in the building, they should take these kinds of dishonest business practices into account and rather use one of the other providers.