Not being able to cancel contract

<p>we have emailed the call centre ********** 24 times already, we do not get any automatic responce back, first email sent was on 17 July 2017.</p> <p> </p> <p>Phoned the call centre numerous times, we can only email a cancellations form to that email. </p> <p> </p> <p>No other email can be given and we are unable to cancell the contract.</p> <p> </p> <p>the contract time has lapsed and we do not need the mobile internet anymore.</p> <p> </p> <p>we wish to cancel account ********** 50, please contact the owner of contract asap!!!! We want to cancel </p>