useless service

I was told on friday to pay a minimum amount to be able to unlock my phone on friday, i went to pay and up untill now my account is still bocked after i phoned your customer services almost 5 times. I finally got hold of a lady on sunday that said she can see the payment and will unlock my phone i will be able to use it within an hour and an half. Well its still locked!!!after i had to phone again!!!! This is verry frustrating your service is pathetic i paid and still im not able to use my phone!!im considering ending my contract in march when its timeto upgrade ive never had issues but this is unacceptable!!!!