Poor customer service

I ordered a Euro Size mattress on the 1st of March, but a Three Quarter (smaller) was sent to me. I contacted the customer service but it was very slow, they had to coordinate between this and that department for weeks, when this was just a simple take back the wrong mattress and send me the correct mattress. I had to chase up more than 10 times on email and calls, because I did not know what they were doing and when I should be expecting the mattress, they always say they will revert back to me but they always forget if I don't follow up again, the only person that did came back to me was Dayyanah, I then only received my correct mattress on the 24th of March after another round of emails. That is it took me more than 3 WEEKS to receive something I ordered and paid within seconds on Cielo website.