I may be speaking out of turn here, but I really think you are gonna have to sit down with parents and other family members and thrash this out, otherwise Ollie is going to end up one very confused dog. It is my belief that Pups, like children need boundaries and consistency, and altho everyone can give you advice and are more than happy to help you, I think you really need to get your mum and dad to agree to taking Ollie to training classes, (or are you attending one already) where you and he can learn together, and carry out that training at home and your parents can see the improvements - it is a shame when you are trying so hard to train Ollie that obstacles are being put in the way like this, have you got one person, aunt, uncle whatever who can see what you are trying to do, agree with it and have a word with your parents?