gum tree is not good for users who cant pay for their free advs

gumtree is a **** page, what is the use of free adv, if we decide to pay for the free adv for 3months, after the three months the advert is deleted and even the cell number is deleted which was in use for free adv, that cell number will never ever be used for free adv on gumtree unless its payments advs only, beacuse that cell number was used by the user to pay for his/her free adv, what is the use of free adv? we use data to go on you site, we use time. we use electricity to go on your site, we know you cant change this now. coz its the only way you earn profits, by giving your users stress for their advs but why when they pay for their free advs you delete them immediately after their payment if out.