Very Unhappy Client

My first time experience was horrific with Zando. I purchased a few items online on the 27/11/15 which I only got delivered on the 18/12/15 , poor and pathetic service. Charly the teamleader called me after numerous emails and telephone and explained the delay (there was no excuse really) and promised me a voucher on my next purchase which i thought was great. What made matters worse was a pair of sandals I purchased was no longer available which was quite disappointing but there was nothing I can do about. Anyway I decided to shop again excited to use my voucher. Guess what, I never received the voucher I was promised, I once again called into the call centre Jill promised that Charly would call me back, waited no call, sent numerous emails no response.. My goods were delivered this morning, the voucher was NOT processed. I than finally received a response from Jill advising that I have been awarded a 10% discount for future booking valid for 90 days, REALLY ZANDO. Is this how you treat your clients? A promise is a promise, Charly a call to me was not going to hurt you or a short email reading \here is your voucher code\" before my goods were delivered. "