useless company

I tried to phone iburst call centre to cancel my account as i am emigrating on 3 occasions the week before last and every attempt i made i gave up after being on hold for more than 20 minutes each time. I then sent an email cancelling the contract and asked for confirmation of receipt. I did not receive confirmation so i phone today and managed to get through after about 10 minutes and was told they have no knowledge of my email which i find amazing considering they are an internet service provider and that i must send them proof of the email i sent. This i cannot do as my computer is in a container being shipped oversea's, so they recon they will debit my account for another month. I would urge people not to use this company as whenever you have a problem they always have an excuse.