Poor Service Delivery

I upgraded my account a few months ago. With this new account came a new card which needed to be linked to my online banking account etc. Everything was moved across successfully except for my auto share invest account. So I gave the support centre a call and was told that I need to email the old card number, new card number and my ID to the share trading guys who will create a ticket. I did and followed up on my email 5 times before anyone responded. They just responded saying that I should create a new account so that my information can be transferred to the new account. This was not possible since it picked up that I already have an account on another card. Before I could respond they closed the ticket. I phoned the call centre again. They logged a ticket and told me they will get someone to get it sorted. I heard nothing. I called them about a week or two later and was told they have tried to call me. I explained to them that if I see 5 missed calls (from different numbers) at the end of the day, I am not going to call each number back and that they should please leave a message or even email. Nothing! Six months later and my account still hasn't been moved to my new card