Worst Service Ever

I have been trying to get my mobile number changed for almost a year. I have requested for additional remotes from technical. When i speak to Indreshni Prettirajh who is apparently the customer liaison or service manager, she doesnt do anything. I requested at the beginning of october to cancel services and refund me my premium due to a premium increase or some charge for radio signal which was never communicated or explained to me, was advised to give them an opportunity to review and try and keep my business. It has been almost a month now and no one cares. If this is the service i get, how can i continue to use a service to protect my property and family when i cannot even get a simple change of my mobile. I am at a point now where i have had to put a stop order to prevent any further debit orders taking place because there is no care from National. Worst service ever.