I have a small company which uses standard bank for transactions

I have a small company which uses standard bank for transactions. I do not get any emails or notifications from standard bank to update me on my account but instead when I have to make a transaction to buy materials I need to supply I find out that my account has been blocked. This has happened for more than five times where my account is being blocked without any notification and my banker also resigned and I was also not notified about this now I have lost my customers and my suppliers because I have failed to pay my suppliers and failed to supply stock to my customers. I am disappointed to see that standard bank is committed to bringing black businesses down without any leniency. Now I am back down because of their incompetency.