planet fitness

I joined Planet fitness during 2017 and got a great deal suited to my financial needs. Then in Dec 2017 a double payment went of that I was unaware of and until today I am still waiting for their Head office to contact me. after trying to phoneand sending an email. Today I see a different Debit order going off of my account that I did not authorise. It seems they do as they please and simply do not care if there is an unhappy customer. I want to resolve this matter but am having no joy in reaching someone interested in assisting me, very poor service from the Head Office .I will never advise anyone to joun up.