The support service itself often takes longer than the call because there are certain actions (f.e. investigation and tests) which are necessary, if the solution can not be found immediately. With level 3 the call costs itself already exceed the time on the line. It certainly is more productive, when the customer takes care of his business, while the supporter fully concentrates on the problem.
Bonus cards     So you really need professional support ?

In this case you should contact me. Please call me under 06737/809391 and leave your telephone number and your name (answering machines for boths numbers), or send an e-mail.
I´ll call you back (the customers pay the costs for the actual support call !).

Furthermore I - mostly - offer single courses (in heterogeneous group courses - especially in the term of computer courses - the customers are often unsatisfied, the more complex the topic becomes because the single person only reaches about 25% here instead of 90% from the relevant information - what´s not acceptable since nowadays time is getting rare) at your place, as well as in my own training room (starters and further computer levels: Windows 7 / Windows 10, Microsoft-Office, internet, ...).

Single courses: Prices / dates