I've been in mining before but I didn't encountered a scammer like this where in they will ask for details and connect you to the blockchain well only few people who doesn't have enough knowledge will be tricked by this, It's important that we should secure our personal details including our login details and we shouldn't be giving it to anyone.
A real support will just give guides and instructions on how are you going to set it up properly but wouldn't ask for any details and specific amount of coin/s.