I can't figure out the meaning of some words:

önemi yok demek isterim-I want to tell you it's not important
ama siz bana cvp verme imaknı sağlamadınız ki-but you sent me a msg...the rest of sentence I don't understand it
ne zaman yapmışım ben bu işi?-when I did this job..

somebody help me please

önemi yok demek isterim-I want to tell you it's not important
OK

ama siz bana cvp verme imaknı sağlamadınız ki-but you sent me a msg...the rest of sentence I don't understand it
But you didn't give me the opportunity to reply!

cvp is short for cevap: reply
imkan: opportunity (it is a typo, should be imkanı )
sağlamak: to provide
imkanı sağlamadınız: you did not give the opportunity
ki: is like an exclamation.

ne zaman yapmışım ben bu işi?-when I did this job..
OK. Or when did I do this thing?

thank you Marion

The last one is a question-When did I do this job?