Cancelled my son's mobile sim on the promise of a More telecom better offer. Sim arrived, called to activate (1 hr process with all the on holds) and be assigned a number and they couldn't do it. Promised to call back within 24hrs and no call. Called again and had exactly the same experience. 3 days later, 3 failed "promised" call backs - probably 5-6 hours of wasted time and I cancelled the account (with a promise of being charged $10 plus our initial $19.99 monthly payment) for early cancellation, which after finally talking to somebody who seemed to care in their retention dept, is now in theory being waived and refunded. We'll see....Don't do it to yourself!