Ridiculous Invoice and no assistance

<p>In January 2016 we decieded that we would take out a cellphone contact with MTN, we went for a contract which costs around R220 per month. The first sign that we made a huge mistake in our lives is when it took MTN over a week to connect the number for us. Then we carried on with no worries until we got to August 2016 where we got a bill saying we owed them over R3300 and the invoice says its for Packet Switched Data calls (Whatever that is and we still dont know cause no one at MTN will help us ). We have contacted the MTN call centre many times and asked them to investigate, we have been told that we changed the contract, we did no such thing ! We monitor the phone on a monthly basis and we have only recieved the contacts amount of Data, free sms's and R50 airtime. I want to know how this happended on a capped account and why if something like that came up the owner of the contact was not contacted ! Why would someone take out a R220 contact to spend over R3300. Now we sitting in a position with MTN offering no help to resolve this and a bill we cant afford and they have handed us over for legal action. They have a no care attitude that stinks and I feel that we should not pay this amount until they can give us proof of what happended.</p> <p> </p>