Leaving programming issues unresolved

It seems if Tymebank cannot solve an online banking issue, they dump it onto the client and leave it "as is". I never had any issues with opening a fixed deposit with Tymebank, until they changed/reprogrammed their fixed deposit interface. Suddenly, after choosing the amount and the term of the fixed deposit, there was no clickable icon/link to proceed to the next step in finalizing a new fixed deposit. It was brought to Tymebank’s attention numerous times – eg telephonically around 1 May, 16 May, even with screenshots provided and again 27 May, to no avail. Tymebank required the customer to follow all kinds of cumbersome steps, instead of fixing the issue from their side, since the issue arose from when they changed their fixed deposit interface. I had to uninstall and re-install the app, clear the cache and data, delink and re-link my device and still the issue remains.