The customer is always wrong

I spent R340,000 with them. The doors and windows were installed ok but the problems came when it was time to remove the plastic. It is now 6 weeks since I requested this to be done and despite 5 short visits, it is still not complete. It seems they are moving from job to job and it never gets completed. Where they have torn tape off the frame it has ********** plaster in many places. It also seems the fixed panels had plastic on before fitting into the frame. We can't get this off as there is always a frayed edge of plastic hanging down. They have an attitude that comes across as "the customer is always wrong". When they talk to you they act like they are doing you a big favour. After my latest request to have these issues resolved, the manager sent me an email as follows "Inside is not to be finished by ambassador. Ambassador service team members can not confirm when they will be back on site. I will have a look at when I have time available to meet with you this week on site". So after 6 weeks they don't know when they will be back and they now say they will not remove plastic and tape from the inside of the windows ! So with windows up to 5.5 metres tall and at the age of 71, I must either go up the ladder myself or pay another company to finish their work. Disgraceful !