Huawei after sales service worst!!

I have booked in my huawei p20 On the 12th of April for repairs on various items on the phone,after receiving it back a whole month later on the 13th of May it came back but some of the items was not repaired as promised,I reported it immediately to huawei and since the 13th of May no feedback I have spoken to three guys from huawei who said they will escalate the matter,spoken to people via live chat who said the same thing but no response.This is the worst service I have ever received and whould recommend anyone not to go ahead with huawei services or even buying the phone