Yes think so too, I have been spraying some heavy systemic stuff but they keep coming back. I am thinking of moving it away from my vegetables as at the moment I am overun but I have set hormone traps, sticky traps and spray neem doesnt seem to work well even for aphids. It is too expensive to spray veg with neem when chemicals are dirt cheaper here but then I wouldn't want to eat the veg!Looking at the 2nd picture I think there is an area in the left side that has red spider mites or thrips.
These critters feed off leaves and cause the down-turning of a leaf because they "suck plant cells from many garden plants,"
Azatin aka Neem based insecticides and/or light sunspray oils can control.
How about the black spots appearing on the leaves?