Vitality health

I joined vitality health early this year after deciding to start a healthy journey and start gym also.now out of the blue I have discovered that my membership was cancelled due to non payment and yet I have bank statements that shows that my debit orders have been going off religiously and I have never missed a payment until now in September that they have decided to cancelled my membership and not debit. I've been trying to call vitality for help since last week when I made this discovery to no avail,I even sent an email but no 1 has gotten back to me,I'm always transferred to billing department where no 1 answers the phone.im so frustrated and worried about my gym contract.someone please help My numbers are *** ***