Non-existent customer service

Ref ***

I put in a claim for the 2 pot savings on 4 Sept 2024. There have been multiple delays along the way and the issue I that you cannot get hold of customer service on any of their platforms. My claim is now I the payment phase but the app states that there are no banking details listed for me. I cannot get hold of anyone on the call center, I held for 1 hour 20 min one day. I requested a call.back which i still have not received. I emailed and still waiting for a reaponse. I logged a complaint hut the turnaround time is 20 workings days which will be far outside the amount of time it is said for a claim to be paid out. I just need to verify that my bankong details are verfified, the docs for this was provided week 1 so there is no reason for the details to be missing.