No follow up on an almost 2 month issue!!!

I had an issue with my apple pay and because of that my account never registered a transaction before 6 April and I never got the bonus 2 500 miles. I called in a couple of times to try resolve why apple pay was not working before the due date, but nothing came of it. Since then I have called a few times and each consultant tells me they escalating my miles query and will call me with an outcome. Not one has called me back and its still pending. This week I called again, promised the same thing and still NOTHING!!!! This kind of service is shocking and I will endeavour to close my account as soon as I can. I have had constant issues with my account from opening to now. The black account is not worth the amount you pay for it!