what is wrong with you Dell canada...my 3 order got cancelled for no reason

first order: placed on 31 july..on deliver day, they called back the shipment for no reason, called customer server, they always put me to Verification Department, called 10 time no one respond, always let me leave a message

second order: cancelled for no reason.then paypal gonna hold a Authorization payment for noidea how long

third order:cancelled for no reason.then paypal gonna hold a Authorization payment for noidea how long