I did order a power bank, it took you guys 2weeks to deliver and plus you sent me wrong power bank

I did order a power bank, it took you guys 2weeks to deliver and plus you sent me wrong power bank. I have to send wrong power bank back, but still i don't get the original power bank i ordered. I sent an email to ask when will i get my replacement, the guy who helped said he is waiting for a stock to come, yet he knew he has to replace a power bank to me . But why he didn't order a right one in time, its already 3 weeks busy buying 1 power bank while in other companies i can get in 3 to 5 days time. Am very disappointed with service am getting 😞😞😞