quick2 seek payment but slow to fix their issues

After i tried doing all my internet banking on wednesday evening my internet dropped and after calling in a few times,NO re connection took place.After a few more calls the Next day somebody managed to connect me which other technicians could not do.but still no good download speeds.then this morning i received a mail AND a sms regarding non payment of my account.FIRSTLY,if you as a isp didnt SUCK,you would of received your payment on time.SECONDLY...the response from your technical side should be as effective as your mails sent for money because TWICE now they just switched me over from a axxexss dns to google dns or whatever so i can receive a good latency for about 5 minutes then its back to a latency of 2000 odd and 0.5 dls. With telkom guest settings on my router i have a latency of 45 and 3.5 mb dls.I don't ,as a paying customer wanna hear about battling a week with problems you had.i NEVER received a mail informing me about hassles you experiencing and if that is the case you should deduct what i owe from the service you are able to provide and not hassle for money for a service you CANT properly provide