Bad service delivery

For the past couple of months now a pattern has started, where the deliverys are late or issues with stock. Im a regular shopper at pick n pay i do every month my shopping online. but every month without fail issues arise, today i was supposed to get my groceries this morning yet i find myself still sitting and waiting in the middle of the afternoon waiting for that order only having to go out of my way to find out what's going on , turns out my delivery was rescheduled without even letting me know to late afternoon. This is not the first time this is happening and honestly im getting very upset and annoyed with the customer service as of late. Their constant lack of communication is getting worse and I don't see myself continuing doing business with them. I always schedule the delivery for the morning as i got my kids to pick up from school midday now im forced to make other arrangements as they didn't have the decency to even contact me. Truly bad service