You can complain to trading standards for false advertising. I've been in constant contact with Oppo for the past two weeks because after 5 weeks my claim hadn't been validated. After I emailed them, an hour later they replied and all of a sudden it was validated. They stated 7 days for me to get the cashback. Then after that was up I contacted them again and they said it had been sent that day. Waited another week and still not
Now they are saying it's been sent to the department that sends the money out and they'll chase them as "top priority" and when I pointed out they said it had already been sent, they told me that it had and it was stuck somewhere yet it doesn't say dispatched on the tracker. And then they had the cheek to say they are still waiting for EE to verify the claim and said they've been chasing EE for a month for ALL the claims.
