Seek professional help if your dog is having obedience issues.
Remember there is always a reason why your dog is doing what its doing, we just have to figure out what and why.
Creating a timeline from when your dog started doing this, it will help to figure the why.
i.e. you trained it to not dig, but 6-9months later the dog is back digging and you don’t know why? Or your dog was toilet trained but a year later it is going to the toilet in the house.
There is always a reason why they are doing this.
Have you stopped all forms of training?
By failing to set rules and enforcing them could mean your dog starts having behaviour problems.
Has there been a change in the house (someone leaves, some one comes, animal has left or arrived, you have taken the dogs status off it and not known that you have. Or has it been hurt and so it lashes out?
by sorting out temperament and behaviour issues you will keep your dog happy . It also validates you as a pack leader and teaches your dog to listen and follow instructions.
NEVER BE AFRAID TO ASK FOR HELP.