Unacceptable billing

I am extremely disappointed and frustrated with MTN's ********* billing practices. I officially canceled my internet contract with them and returned their home router, assuming all obligations were settled. However, TWO MONTHS later, MTN ********ly processed a debit order of R5000 from my account without any justification or prior communication. This is outright exploitation! How can a company deduct such a massive amount after a contract has been terminated and their equipment returned? There was no warning, no invoice, and no explanation just an unauthorized withdrawal from my account. I demand an immediate refund and a proper explanation. MTN’s customer service has been unresponsive and unhelpful in resolving this, leaving me feeling ****** and disrespected as a customer. Avoid MTN if you value transparency and fair treatment!