Membership cancellation

Beginning Feb I requested to cancel my membership and got confirmation that my request has been noted. I was told my membership will be cancelled end March. To my surprise they deducted again in April. When I enquired I was told my letter did not have an HR stamp. I asked the consultant why did they send an acknowledgement if my letter was missing a stamp, she said she will investigate and get back to me but she never did until I called. I spoke to another consultant who just told me that my membership will end in April because I'm paying 2 months ahead. Strange!!!I just accepted that and left this as it. To my surprise I got my refund on the 12 May...Thanks for the refund