No payments for 3 weeks after bank account change request

Hi

Has anyone had any problems communicating with Shopify. We have been with them for approx 6 years with no issues. We have had to change our bank account and due to a finance they must authorise. After chasing everyday a week later they opened up the ability to change the account. A further week and a half has gone by and still no money even after promising all money would be released. We just get fobbed off constantly and we have now not has any payments for 3 weeks! We are owed 1000’s and obviously have bills to pay! It’s Been escalated but nothing gets done