MWEB MAIL SERVICE NOT WORKING

My wife, an MWEB customer of over 15 years, recently changed her computer and since then she has been unable to send emails when away from our home. MWEB tell me that it is because every time she moves to a new hotspot she has to change her outgoing mail settings. This in effect means that my wife is only ever able to send mails from her mweb account when she is logged in at home. Despite the fact that once one is connected to the internet one should be able to access one's mail account and send and receive mail without the need to change outgoing smtp settings every time - my email service has worked like this and I do not know of any service that works any differently. Normally a webmail interface is provided and authentication is automatically setup when you set up the mail client. Apparently this is not the way that MWEB operate. I am told that I am lucky that my mail works like that - so I guess if you are an MWEB client you are lucky if you can send and receive mail. Their call centre sucks too. If I do not get this resolved in the next two days I am going to terminate my service with MWEB. Get it right MWEB!!!!