Mancosa make liable for not studying through them and charge me R30 000 for it.

i cancelled my studies for year 2024 and deregistered on the 28 of November 2023, and now they come with that i need to be responsible for liabilities that is approximately R30 000. I email them sereral times to state that i deregistered in the time frame, now they constantly email me to pay the liabilities, I think that Mancosa is the most disgracefull Instatute. Also i didnt even study a single module, where i must pay a R30 000, this is really rediculous.