No care for customers at all

I bought a phone on Tuesday ,the battery only worked for two days ,I could not take it during the weekend because I was away for a holiday, I sent it back on Tuesday thinking that its still within seven day but no they tell me you start counting from the day you purchased it ,, I have to sent it for repairs which takes more about two months just for a battery . I took a risk because my friend also had a problem with this phone bought from the same shop, I am very dissappointed ,I always buy my phones at pep but never again.Accordi to my counting from Tuesday to Tuesday that is a week and it makes seven days I dont know how they count their days.