"It has been very rude of me to make you wait like this. I totally understand why you are upset. Unt ... " (more)il you receive your item, i shall refund your credits. Again, i am very sorry for making you wait."
"Im very sorry its taking so long you might recieve them tom., or the next day. Im positive they wil ... " (more)l come in. Im sorry i have been very busy with work, that it took so long to come in. Again im very sorry. They will come in."