Bad service delivery

I cancelled my package 1st of April, a agent then called me and convinced me to stay with Supersonic and take the uncapped package from 1 May at my new house. I specifically told her that an agent needs to call me before the 28th so they can correct my new debit order amount she told me they will. Last night i receive a invoice for the old LTE package for May! I called last week and the lady i spoke to was so confused as to what is happening with my profile there is no note for the new package even. Supersonic messed everything up. Therefore i will be continuing with the cancellation and going with a new service provider because Supersonic is the worst when it comes to service delivery, there is always an issue!