ABSA internet banking sucks.

I am totally fed up with ABSA internet banking. More often than not it will not connect with my home wifi. I have three computers and two cell phones that never have a connection problem; its just the ABSA app that complains. If I phone the call centre all I am told is to use a data connection instead of my wifi because there is a problem with my wifi. This is all bull; why does everything else work except the ABSA app? And a further thing; all to often the security message does not come thru, or its too late (longer than the allowed 60 seconds). ABSA, please get some competent people to help.