My experience with Shopback is the opposite.
I'm still waiting for them to track orders I have logged as claims AND emailed them about after no response. Their responses to emails have been slow . Not only that they email me the same list of possible reasons for an order not tracking even after I respond that they have already sent me that and none of them are relevant - in the same email chain. Every claim I have had to followed when eventually credited has been at the wrong rate.
I find then terrible to deal with.
to be honest, what really annoys me,and out of principal too, is the guarantee they have of getting purchases tracked, but its limited to 30 per year and $50 per transaction or something along those lines
with me I was doing many transactions with one major retailer for years and getting cash back, but in my last year with them, one in every 3-4 transactions were being declined with BS excues, coinindetally, larger transactions. They would track and 6-11months later still werent being approved
even after telling them to investigate it properly, firstly they accused of returning the item, then they blamed my OS/ cookies/adblockers , and then finally declined it again, then after me chucking up a stink, saying out of good will they will approve them all, (we're talking $1000s of dollars here)
and now this guarantee they have means that after 30 transactions or if its above $50, they wont even bother investigating, even if its their fault, while they pocket the $$$,
i mean to gloat about, giving you a guarantee with conditins for something tehy promise to do and you are entitled to, is ludicrous
imagine going to a local restaurant , where you order off the menu, and they say, we will only investigate the first 30 claims a year if we fail to not bring out your food? and if its above $50 dish, we wont even investigate, but we will still charge you!