With Almulla Promotion i got 5KD coupon. While i A...

With Almulla Promotion i got 5KD coupon. While i Applied 1st coupon it showed invalid .When i contacted their chat support they asked about the product it was 13 kd product and i told them and they replied coupon is valid for 15 days from issuance. Later i got another coupon then when i tried to apply suddely they marked the product as out of stock. so i choose other product but it also loading for long time in payment gateway. Its also failed there was no response from chat support. If you are not willing to give product why you are providing coupons to attract customers.