Charging shipping to fix their mistake.

After Takealot cancelled part of my order (***3), which they admitted:

"I have checked your account and can confirm that the following items were cancelled in error by our system. Our sincere apologies. Please allow me to escalate your query so that our Replacements Team can issue a replacement for the items which were cancelled in error. "

They now expect me to pay for shipping on the fix for their mistake. So much for sincere appologiies.