Vine ribbed belt torn engine damage

Can someone help me !!?? Volvo xc 60 D5 AWD Summum First registration 2010 After my air conditioning has given up the mind and I wanted to have the damage repaired in a free workshop, which specializes in Kliemaanlagen, I was told that the velcro belt is torn, the air conditioning compressor is blocked and needs to be renewed, we are renewing both velcro belts and the air conditioning compressor. Wonderful !!!!!! After a month the whole engine gave up the mind when driving in the city. First I saw that the big NEW velcro belt, which is connected to the lighting machine etc., was torn and had my best friend dragged into the workshop. There it turned out that the steel wires that have dissolved in the velcro belt have wandered into the housing of the tooth belt and cut the tooth belts. Now I stand there with a motor-total damage and do not know if the air conditioning man has misfitted the belt! Now in a VOLVO contract workshop and that cannot fully resect how the damage is incurred. I will remain on the job now.