Terrible, you have to beg for something to be solv...

Terrible, you have to beg for something to be solved and after paying for each query, per year they charge you 20% of the value of the new system for maintenance. If you do not pay it, a month is a 40 and then a 65. It can be very useful for a large company, ah the system comes so you can adapt it to your needs, so once you have it they charge almost the same in adapting it to your needs.