Hi Mwnisar
Thank you for your post, welcome to the Community Forums.
We're really sorry to hear that your switch to us hasn't been a very smooth experience for you.
Just to clarify, we are not able to cancel new customer's services with their existing provider's on their behalf. This would be something that the customer has to do in every instance for security reasons.
In order for a landline port to be successful, we ask that new customers keep their landline service active with their existing provider until the port has completed. Otherwise, we may be unable to complete the port successfully. Whilst your port is in process, you will be given a temporary landline number once your landline service has been activated, so this side of things sounds normal. However, it's strange how your number seems to have reverted from the number you want to keep back to the temporary one.
I have sent you a PM so I can take a look into this for you. We'd really like to help.
Thanks,