Bogus business strategy

So i get a call from one of their consultants to sell me a new data contract, that time she knew i have an existing contract which is not even due for an upgrade, i did highlight that to her and she said to me not to worry cos she is going to cancel the existing one and leave the new one in place, come statement all contracts are still in place, so she was focused on selling her product and boost her sales, i logged a complaint and was assured an investigation is in progress only to find that the investigation or case was not opened...the debit date is nearing and they will definitely find nothing in my account, fortunately i moved my salary to a different bank...we'll see who outsmarts who, sick and tired of this poor business conduct.