Travel 50 & Beyond magazine review: cashed check but no magazine and now request from PBA for subscription renewal 1

I sent check #6628 of Twin Star Credit Union to purchase a 3yr subscription to the magazine, "Travel 50 & Beyond". The check was in the amount of $6.00 and dated 1-30-11. I heard nothing from this company until 4-11-11 when I received a "notice of renewal/new order" request for $16.00 for an installment to this magazine.
Please check on this for me as there was no mention of installments when I sent the check. Sincerely, Sharon Kilbourn, 106 Jackson View Dr., Chehalis, Wa. 98532
E-mail: [protected]@msn.com