Business Account Close without Notification

We had an business account with Standardbank for the past +/- 10 years due to my husbands ille health our company is not as active as it us to be but still have income annually. In 2014 Standard bank close our business account without consulting or prior notice, after 4 weeks of battling they reinstated the account, but all service statements bank cards etc we could never get reinstate the banker Solly never response to mails and when we visit the bank over weekends he is never available for a consultation. in July 2015 a service consultant phoned us to request we Rica the account which we did by sending all supporting documentation to our business banker. In September I could not access our internet bank and sent an inquiry through but like always got no assistance from our banker. December this year we needed to use the account just to informed that the account was once again close without notification. An official query was open on the 23rd with a promise that this will be resolved within 5-7 days. To date nothing has been done to resolve and despite the daily e-mail being sent to banker and call centre.