Unprofessional and Bad service

I had a 12 months contract with onair tv from last around March. I sent them an email to cancel contract on 28 April 2022 and served a notice in May and they also stopped providing me with data with effect from 1 June. But to my surprise they deducted R1298,00 on the 31st of July and R649 on 30 June. Onair is so unprofessional and also have bad service. You can't even get them on the phone.