Terrible service

I am having the most terrible experience with DSV. My study material was sent from UNISA to DSV to deliver it to me, I have been having issues since the start with getting my parcel delivered. It was stuck on weight change for a while where after I had to correct the address twice. When I did a tracking this morning it showed that the parcel was delivered last night 23:34pm at an incorrect address. Someone signed the parcel using my name as a signature put they spelled the name wrong as well, why did the driver not notice okay this person is signing her own name wrong? I phoned them this morning asking what is going on only to be told it will be escalated, I phoned again after 3 hours and I was told that they are not aware of anything the last communication was on Saturday, meaning my query was not escalated according to my understanding. I phoned again now and requested that I get some feedback because this is ridiculous, how can you deliver to an office park half past 11 at night and have someone sign for it who is clearly not me. I was told that Margaret has escalated the query to the supervisor and they will let me know once they contacted the driver that delivered my parcel and find out who signed for it. I feel this is utterly terrible service, I have to phone every time I want a follow up. I am very frustrated with DSV because my studies are standing still because of them. Let's see if the miraculously find my books and deliver it to the CORRECT address this time. I will not ever use DSV for business or personal use ever or recommend it to anyone.