Regus Business Centre ********** credit card transactions

My business rented office space from Regus Business Centre at Quadrum Office Park between March and June 2018 and I gave authority for the rent payments to be charged to my credit card. After moving out my credit card is still being charged... but for a completely different company's rent. I have raised the issue several times with Tyrone and Amanda from Regus to no avail. I just had the third unauthorised payment being taken from my card and can no longer see it as anything by theft / *****.