Very Poor customer service

About a year ago I paid for the upgrade which gives you certain benefits over their free service. somehow I accidentally paid for a years membership in one lump sum rather than for a monthly subscription, this was an honest mistake so I wrote to them asking to change to the monthly subscription and to be refunded the money I had paid. I got a rather curt reply from them saying I should have followed the instructions more carefully. Needless to say I was amazed that such a large and successful company should have such poor customer service and I wrote back to tell them so. After this I received no reply at all but with no refund I could not take my business elsewhere. The membership has now expired but I just received an email from them today asking me to renew it. This is what prompted me to write this review to warn others of their poor service.