Answering questions in spaces other than that provided e.g answering question 3 under the section for question 4

If answers to questions have been wrongly written in spaces other than that provided for the questions for example, if question 3 was answered in the space for question 4 mistakenly and that continued till the end of the exam, Is there an appeal process that could rectify this? Given the description of the retabulation process, it is certain the zeros previously awarded for each question would just be re-computed.

Any thoughts?