Stop ****ming your students!!!

I cancelled my contract with them and they said they didn't get it. I did send cancellation forms to almost everyone from their college who contacted me, still they say they never got it. I still have proof on my email.... The last time a lady phoned me and she asked me to send those proof to her, she also disappeared, I did phone her and told me that she will get back to me but never did..!!! I had such a terrible experience with them from the first month after I signed up with them.