SHOCKING SERVICE TO SAY THE LEAST

What absolute shocking service from a cellular company like MTN. My phone was downgraded due to my company taking over the contact. My debit order changed due to this but guess MTN wanted to make extra money. For 2 months they took off the normal debit order and not the reduce rate. They now owe me R1000. Do you think they are responding to it - NOPE. Sad sad story! If I should leave my company, clearly will not keep my contract with MTN and I have been with them since getting my first cellphone plenty years ago! This might be the only way to get an answer??