Disastrous service. Review on Delhivery

I have just started selling some stuff on ebay so for the courier service I decided to use delhivery as it was cheaper than other courier companies in the market, till now I had shipped 9 orders through delhivery but now I dont think that I would ship my 10th order through delhivery as out of 9 orders there were only 5 orders for which I would say delhivery gave satisfactory service, now I am going to elaborate my problems as follows:-

1:- UNNECESSARY OVERCHARGING:- I am selling the shipping the same product all the time and also packaging in similar way but, I never understood how the dimensions of the package gets changed during transit as I always measure the dimension before shipping but leaving 5 orders for the other 4 orders I have been charged just double in the name of increased volumetric weight.

2:-NOT SO QUICK:- As of now a days courier services are really very fast but no matter what the location is delhivery would take atleast 7-10 days in delivering the order.

3:-CUSTOMER SERVICE:- worst, they are very careless, I created an online shipment on saturday night but it did not get picked up even on monday till 7 pm and when I tried to contact delhivery customer service department, first of all there was no local office contact no. and the central office was totally irresponsible and careless about my problem, so finally I contacted the courier boy who generally comes up to pick up the courier then only the courier got picked up from my place and finally got delayed in reaching the destination.

above are the few but big problems due to which I would never recommend delhivery to anyone, dont get trapped by seeing the cheaper service otherwise you would have to regret later.