Faulty machines, appalling service and no customer care given

I had bought a washing machine which is giving an E30 error, which is still on warranty, i contact the call centre, who logs a call and assigns it to a technician, the call centre agent says their sla is 24 to 48 hours, the technician arrives 8 calendar days later after me, the customer having to contact the call centre enough times to make sure he comes. A lady by the name of Grace, who is not helpful at all assisted from the call centre and never phones you back, creates more frustrations cause you must always have to call her back to follow up, keeps making like she cannot get hold of the technician, i do not understand how AEG, such a big company only has one technician who can be called out, is in the business of selling faulty machines and does not want to come and fix or replace the machine. I will be escalating this matter to consumer tribunal, which i have done so for the store i have bought the machine from this morning and should AEG not treat this as urgent, i will be reporting them as well.