Dissapointed after 17 years of being a customer

I have just attempted to have a credit card machine installed for our business. What a nightmare. The card machine works I suppose after a fashion. Sometimes takes 9 minutes to do do a transaction. And do you think I have been able to get someone here to solve the issue. I cant even get a name of a person who is responsible to fix my issue. Secondly the machine cannot do manual transactions. This was requested at my first conversation and now I am told I am not trustworthy enough to have the facility. However I have it with every other machine. This is now ongoing 2 months and I am pretty much giving up. If I don't get this resolved by Friday I will move my custom to another bank who is able to serve my needs regardless of the hassle factor of doing this. My relationship with FNB is currently at a 17 year low.