Unfair and rude treatment

I subscribed with infinity about 3 years ago,but I haven't been happy with their service. 2 months ago they decided to cut my service even after acknowledging the receipt of payment,and they didn't bother calling me for an apology for the inconvenience they caused.Again last night they cut my service,I don't have internet as I write this email.This other time they made me pay R250 reconnection fee for their mistake,they don't respect their clients at all.