Vumatel Charging for Botched Job?

We had our new fibre line installed in our new house for less than a week when it just turned off. Some technicians arrived late at night, which was prompt and professional, to look and said that there seems to be a kink in the fibre optic cable and that a team would come to repair it the following morning.

I went through today to meet the team and was told that a re-installation would be free of charge (sounds right), but have now received an email from Vumatel claiming re-installation will cost R1725?

Perhaps this is just a generic email sent out after re-installation is logged, but if not this is unacceptable and I see no reason for us to have to fork out that amount of cash after what seems to be a fault within the wall - nowhere near where we or anyone else could damage it (the technicians themselves were puzzled by how the cable developed a kink).