Dear Toufic. We're very sorry you still feel this way, as indicated in our responses.
There is no free trial with us and the paid test you did was good, as you bought the live services which means creating custom numbers, accounts and services for you specifically.
With regards to the issue at hand: As explained, there is no difference in processing of the calls you made in the test or the live version, but your parameters on both sides (incoming and forwarding) have changed in the live services. This is something that can, regrettably, sometimes result in different processing at local, foreign level. The services, incoming calls and forwarding work perfectly but it seems that somewhere outside our control something created an occasional issue. We were trying to get to the bottom of this issue and see how to solve it when you became aggressive towards our staff which is not acceptable, of course.
If you want to get back to us in a constructive, respectful cooperation, we are there for you and more than happy to help and try solve the issue.
Update 02/20/2020: Dear Toufic. I'm sorry you still feel wronged although you have clearly indicated that we should not get in touch with you again. There is a clear T&C indicated no refund policy on custom solutions as each solution, including yours, was specifically created for you. That is why we have the Test products in place, so you do not get tied into a contract just yet. Technically, the test and live products are identical in our systems and as far as we have any control and they all use the very same system, Prmium Plus routing, etc etc. It is the parameters that changed outside our systems and control that you had an issue with. Please get back in touch with us for a constructive and respectful solving of the issue.