I have had the exact same problem, I was a member of a few of their sites until I got the same email accusing me of being a bonus abuser and wouldn’t be receiving any other offers. It just makes me feel as though I had done something seriously wrong and I hadn’t. Why offer you the opportunity to sign up to these sites by offering good bonuses and then punish you if your depositing. Problem is it seems to be most of the only good sites offering any decent offers with good range of slot providers ie novomatic ( who don’t seem to be available anywhere else) are from the White Hat brand and now we can’t sign up to them and receive offers if we already play at a sister site. Plus this will have a negative impact on Jimbo and Craig as they promote several of these sites so they will miss out on the affiliate income. On a positive note though I have to congratulate Kassu casino on restoring my faith. I recently played with them won a bit and ended up complete wagering requirements resulting in a cash out. However next day I received an email from them stating that I had gone over the max stake whilst wagering ( I don’t remember doing this at all) and that I was in breach of terms. So I thought oh no there goes my cash out! But as I read on they told me that they were sure this was an over sight and that they would honour the cash out and they then processed it within the next couple of hours. Big thumbs up to Kassu, they could have very easily declined and I would have been stuffed. 

Same thing happened to me, signed up thru the Gamblersden link, received the deposit bonus but didn’t receive the 99 spins. I contacted live chat and they gave me the £9.90 bonus. So yeah 99 spins would have nice but at least they were gracious enough to sort me out. Seems to be a common fault tho by the looks of here.