What do they even hope to accomplish with that? Get you hired? Or bait & switch the client? In any case, you should talk to your company's legal team (and not r

What do they even hope to accomplish with that? Get you hired? Or bait & switch the client? In any case, you should talk to your company's legal team (and not randos on the internet). Whatever the former employer is doing, it sounds like it could have the effect of sabotaging your new company's business or reputation with that client, which could be illegal.