POOR SERVICE AND NON RESPOND TO QUERIES

I took phone contract with this company in December they deducted once off connection fee of R690 and In January they deducted R509 but my devise was locked I send them email , WhatsApp no responde and they landline number always not in services , PLEASE GUYS STAY AWAYFROM THIS COMPANY THEY ****MING PEOPLE'S MONEY AND LOCK YOUR PHONE FOR NON PAYMENT, I TRIED TO BLOCK THE DEBIT ORDER THEY ALSO BLOCKED IT SO I MUSN'T DISPUTE OR BLOCK THEM TO DEBIT MY ACCOUNT,