Where do I start I was contacted via phone call on May * to sign up with a ** month pla...

Where do I start I was contacted via phone call on May * to sign up with a ** month plan as Virgin was coming to an end and I agreed to a $** monthly plan which for some reason I had to have two numbers my existing number and a new number therefor charging me $**.** for each number as this was the only way I was told that I could received **gb of data. On May * live chatted with Brad at great length to cancel **** *** *** the extra number I was given (order number ********A confirming this number was cancelled). WHY AM I GETTING A BILL FOR $** FOR THIS NUMBER I HAVE CANCELLED***th May visited Optus shop to rectify all of the above.*Spoke to Kevin Ref: ************ and was assured in *-* business days all would be fixed. Cancelled $** plan with two numbers and change to $** plan with **gb of data*WHY AM I GETTING A BILL FOR $** FOR THIS NUMBER I DON'T NEED***th May AGAIN visited Optus shop as my phone had been disconnected from Virgin given new sim thinking all was FINALLY RESOLVED.**th June contacted by automated voice (how personnal) and after pressing many numbers spoke to yet another person outlining yet again what had happened quoted all necessary numbers to him and HE TOLD ME I DID NOT OWE $***SOMEONE SHOULD GET THIS SORTED AS I WILL BE NEXT GOING TO OMBUDSMAN TO COMPLAIN