The price, however, stays constant for those men already corresponding with her, but increases for new contact attempts, thus, naturally limiting the number of guys writing to her. (my-Russian-lady.com)
The best approach for this type of learner is to maintain contact attempts until they respond in some manner. (talentlms.com)
A certified letter, stating your simple claim for refund, and citing all of your specific previous contact attempts, for the record, would be a good start. (law.stackexchange.com)