get in deeper
1. To become increasingly involved in a particular situation. You say you don't want do business with them anymore, but here you are, ready to sign a new contract and get in deeper.
2. To worsen a particular situation. You've already insulted her, just shut your mouth before you get in deeper.
get in deeper
Fig. to get in more and more trouble; to get more deeply involved with someone or something. Every time he opened his mouth to complain, he just got in deeper.